CN1303323C - Water turbine wingsection for ocean current generation - Google Patents
Water turbine wingsection for ocean current generation Download PDFInfo
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- CN1303323C CN1303323C CNB2004100664193A CN200410066419A CN1303323C CN 1303323 C CN1303323 C CN 1303323C CN B2004100664193 A CNB2004100664193 A CN B2004100664193A CN 200410066419 A CN200410066419 A CN 200410066419A CN 1303323 C CN1303323 C CN 1303323C
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- aerofoil profile
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient
Abstract
The present invention relates to a water turbine wing section for ocean current generation. Smaller curvature and smaller maximum thickness are selected according to wide operating condition of the water turbine for the ocean current generation. The ratio d/c of the maximum thickness of the wing section and the chord length of the wing section is 0.1570, and the ratio f/c of the maximum curvature and the chord length of the wing section is 0.0229. Although the wing section loses part of wing section performance under a conventional attack angle, the wing section obtains superior operating condition changing performance, and simultaneously, the position of the maximum thickness is moved backward. Thereby, the reverse apply work capability of the wing section is enhanced so as to enhance the reverse lifting force coefficient of the wing section; the back edge point (X<R>/c=0.95) of the wing section has circular arc transition, the ratio R/c of a circular arc radius and a wing section chord length is 0.0208 to increase the back edge radius of the wing section, and thereby, the influence for the wing section performance by thin-airfoil speed loss of a large attack angle is weakened. Simultaneously, the damage for the wing section by foreign objects is reduced.
Description
Technical field
The present invention relates to a kind of aerofoil profile of water turbine, relate in particular to a kind of aerofoil profile that is used for the current power generation water turbine, at current power generation to the specific (special) requirements of water turbine and specialized designs.
Background technique
Current power generation is a kind of mode of the novel acquisition energy.The water turbine that is used for current power generation is by the flowing of seawater, and promotes water turbine and rotates, and the kinetic energy of seawater is converted into the mechanical energy of water turbine, is the mode of obtaining electric power a kind of environmental protection, cleaning.Turbine blade is the most critical parts of such water turbine.And for the blade of water turbine, the aerofoil profile of leaf cross-section is selected and research is the direct factor that influences the water turbine mechanical efficiency.
Because factors such as the flow velocity of ocean current is little, head is low, the marine stream direction is uncertain, thus when utilizing current power generation, water turbine there is special requirement, as the reversible water wheels adopting, the not only complex structure of water turbine, and efficient itself is very low.Though some scientists have also designed the water turbine that can obtain high rotational speed at lower current and since during this class water turbine rotation strong vibration with and lower efficient, make this water turbine can not obtain the extensively application of reality.
From principle Analysis,, except structural requirement,, also different with general water turbine for the requirement of vane airfoil profile for such water turbine.Because therefore the uncertainty of marine stream direction can't lay water turbine according to a definite direction.Like this, water turbine is put into after the ocean, and turbine blade is met stream (0 °～360 °) with inevasible with the bigger angle of attack in a lot of operating times.If during the design blade, select aerofoil profile commonly used (as NACA aerofoil profile, RAF-6 aerofoil profile, CLARK aerofoil profile, LS aerofoil profile, Gottingen aerofoil profile, FAGE﹠amp; COLLINS aerofoil profile, RHODE GENESE aerofoil profile, COANDA aerofoil profile, EPPLER aerofoil profile etc.) because operating conditions is abominable, current will separate at blade surface under the big angle of attack very soon.At this moment, the lift coefficient of aerofoil profile will descend significantly, the rapid increase of resistance coefficient, and turbine efficiency will reduce greatly, be difficult to reach designing requirement.At present, be used for the aerofoil profile of water turbine design, often be limited in the less operating mode scope, in the operating mode scope, aerofoil profile has bigger lift coefficient and less resistance coefficient, still, in case leave this operating mode scope, aerofoil profile generation stall, performance worsens rapidly.Therefore, must design a kind of aerofoil profile that is specifically designed to such water turbine.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, design provides a kind of novel aerofoil profile that is used for the current power generation water turbine, can adapt to fully that the ocean current flow velocity is little, the uncertain characteristic of marine stream direction, even under the very big angle of attack, can guarantee that also blade has bigger lift coefficient and less resistance coefficient.
For realizing such purpose, the maximum ga(u)ge of the current power generation water turbine aerofoil profile of the present invention's design is about with the ratio of the chord length of aerofoil profile: d/c=0.1570, the maximum ga(u)ge position is: x
d/ c=0.35; Maximum camber with the ratio of the chord length of aerofoil profile is: f/c=0.0229, x
f/ c=0.2167.Consider the hydraulic performance of the big angle of attack of aerofoil profile, at trailing edge x
R/ c=0.95 place, with arc transition, radius of arc is R/c=0.0208 with the ratio of the chord length of aerofoil profile.Wherein, c is the chord length of aerofoil profile, and d is the maximum ga(u)ge of aerofoil profile, x
dBe the abscissa value of aerofoil profile maximum ga(u)ge place aerofoil profile, f is the maximum camber of aerofoil profile, x
fAbscissa value for aerofoil profile maximum camber place aerofoil profile.x
RBe the abscissa value of arc transition place aerofoil profile, the coordinate axes initial point is taken at the aerofoil profile leading edge point, and abscissa x axle overlaps with chord length c, and direction is to point to trailing edge from the aerofoil profile leading edge.
In general, obtain bigger lift coefficient, be a kind of the most effectively means by increasing maximum ga(u)ge and camber.But when increasing camber and thickness, the most worrying is mobile performance under the off-design condition of aerofoil profile.The aerofoil profile of lift is to utilize the adverse pressure gradient of control meticulously to make nearly wall fluid deceleration and acquisition greatly, but the angle of attack increases a little, the resistance that will cause airflow breakaway and bring thus increases and loss of lift, and their performance has worsened rapidly a very narrow envelope curve outside.Therefore, consider the operating mode scope that is used for the current power generation water turbine, choose less camber and less maximum ga(u)ge.Like this, though sacrifice the airfoil performance of (340～360 °, 0～20 °) under a part of conventional angle of attack, its superior off design performance is enough to remedy the loss that the former brings for the water turbine performance.
Compare with common Airfoil Design, consider the off design performance of aerofoil profile, when this aerofoil profile of design, move behind the position with maximum ga(u)ge intentionally.Analyze near reverse flow angle (angle of attack is 180 °), point of maximum thickness moves to the trailing edge direction, can improve the reverse acting ability of aerofoil profile, and the reverse lift coefficient of aerofoil profile is increased.From the forward flow angle, point of maximum thickness also should not be too near to leading edge.This mainly be because, after the too close leading edge of point of maximum thickness, " point " leading edge to walk around aerofoil profile of flowing and sharply quickening, the reach of pressure minimum point, the corresponding deterioration of adverse pressure gradient, and cause too early generation commentaries on classics to be twisted and corresponding loss of lift, after moving after the point of maximum thickness, the position of pressure minimum value can be pushed as far as possible to the rear portion of aerofoil profile, make aerofoil profile leading portion boundary layer stable, separation point is postponed, and helps the acting of aerofoil profile leading portion convex surface, thereby the performance of aerofoil profile can be improved on the whole.
For conventional aerofoil profile, if the angle of attack near 180 °, then aerofoil profile is to meet stream with thin airfoil trailing edge, the mobile thin wing that is similar to of aerofoil profile front end flows, air-flow separates very early in the upstream.Than under the Low Angle Of Attack, fluid is very fast again attached to airfoil surface.Near the rear end time, bigger aerofoil profile leading-edge radius worsens the fluid adverse pressure gradient, separates once more, forms bigger separation whirlpool.Along with the angle of attack increases, front end adheres to the whirlpool and separates the whirlpool with the rear end and increase gradually, draws close mutually, and interaction between the two strengthens, and integrating in final two whirlpools, forms thin wing stall.So, consider the defective of conventional aerofoil profile, when this aerofoil profile of design, specially at trailing edge x
R/ c=0.95 sentences arc transition, and the ratio of its radius and aerofoil profile chord length is R/c=0.0208, thereby increases the trailing edge radius of aerofoil profile, thereby weakens the influence of thin wing stall.
In addition, because trailing edge is with arc transition, therefore more blunt outer rim makes foreign object reduce to minimum to the damage of aerofoil profile, and is easy to processing.
In sum, the novel aerofoil profile that is used for the current power generation water turbine has following characteristics:
1. the maximum ga(u)ge of this aerofoil profile is about: d/c=0.1570, maximum camber is: f/c=0.0229.
Though sacrifice the airfoil performance of (340～360 °, 0～20 °) under a part of conventional angle of attack, its superior off design performance is enough to remedy the loss that the former brings for the water turbine performance.
2. the maximum ga(u)ge position of this aerofoil profile is: x
d/ c=0.35 compares with other aerofoil profiles, and maximum ga(u)ge moves behind the position, thereby the performance of aerofoil profile can be improved on the whole.
3. during this Airfoil Design, at trailing edge x
R/ c=0.95 sentences arc transition, and the ratio of radius of arc and aerofoil profile chord length is R/c=0.0208, is used to increase the trailing edge radius of aerofoil profile, thereby weakens the influence of thin wing stall.
Since trailing edge with arc transition, therefore more blunt outer rim makes foreign object reduce to minimum to the damage of aerofoil profile, more blunt outer rim also makes the processing of aerofoil profile reduce to minimum.
Description of drawings
Fig. 1 is used for the air foil shape schematic representation of current power generation water turbine for the present invention.
Among Fig. 1,1 is the upper surface of aerofoil profile, and 2 is the lower surface of aerofoil profile, and 3 is the mean camber line of aerofoil profile, and C is the chord length of aerofoil profile, and d is the maximum ga(u)ge of aerofoil profile, X
dBe the abscissa value of aerofoil profile maximum ga(u)ge place aerofoil profile, f is the maximum camber of aerofoil profile, X
fBe the abscissa value of aerofoil profile maximum camber place aerofoil profile, R is the radius of trailing edge transition arc.
Fig. 2 is the wing section lift coefficient plotted curve of 0～180 ° of the angle of attack.
Fig. 3 is the wing section lift coefficient plotted curve of the angle of attack 180～30.
Fig. 4 is the profile drag coefficient curve figure of 0～180 ° of the angle of attack.
Fig. 5 is the profile drag coefficient curve figure of 180～360 ° of the angles of attack.
Embodiment
Below be unit 1 with aerofoil profile chord length c, the specific embodiment of the present invention is further described.
Get after the aerofoil profile chord length is unit 1, blade coordinate such as table 1 are listed.
Table 1 blade coordinate
| Upper surface | Lower surface | ||
| X | Y | X | Y |
| 0.0000000E+00 1.6666668E-02 3.3333335E-02 5.0000001E-02 6.6666670E-02 8.3333336E-02 0.1000000 0.1166667 0.1333333 0.1500000 0.1666667 0.1833333 0.2000000 0.2166667 | 0.0000000E+00 3.6133267E-02 4.9626011E-02 5.9244741E-02 6.6778749E-02 7.2925441E-02 7.8045815E-02 8.2356974E-02 8.6002566E-02 8.9084186E-02 9.1677360E-02 9.3840457E-02 9.5619962E-02 9.7053848E-02 | 0.0000000E+00 1.6666666E-02 3.3333331E-02 4.9999997E-02 6.6666663E-02 8.3333336E-02 9.9999994E-02 0.1166667 0.1333333 0.1500000 0.1666667 0.1833333 0.2000000 0.2166667 | 0.0000000E+00 -1.7037073E-02 -2.3597769E-02 -2.8401444E-02 -3.2277219E-02 -3.5546843E-02 -3.8375780E-02 -4.0862702E-02 -4.3072209E-02 -4.5049436E-02 -4.6827488E-02 -4.8431545E-02 -4.9881365E-02 -5.1192816E-02 |
| 0.2333333 0.2500000 0.2666667 0.2833333 0.3000000 0.3166667 0.3333333 0.3500000 0.3666667 0.3833333 0.4000000 0.4166667 0.4333333 0.4500000 0.4666667 0.4833333 0.5000000 0.5166667 0.5333334 0.5500000 0.5666667 0.5833333 0.6000000 0.6166667 0.6333333 0.6500000 0.6666667 0.6833333 0.7000000 | 9.8173790E-02 9.9006645E-02 9.9575534E-02 9.9900618E-02 9.9999622E-02 9.9888295E-02 9.9580728E-02 9.9089615E-02 9.8426431E-02 9.7601622E-02 9.6624695E-02 9.5504351E-02 9.4248563E-02 9.2864662E-02 9.1359362E-02 8.9738838E-02 8.8008754E-02 8.6174332E-02 8.4240302E-02 8.2211040E-02 8.0090500E-02 7.7882275E-02 7.5589590E-02 7.3215373E-02 7.0762195E-02 6.8232320E-02 6.5627709E-02 6.2950060E-02 6.0200755E-02 | 0.2333333 0.2500000 0.2666667 0.2833333 0.3000000 0.3166667 0.3333333 0.3500000 0.3666667 0.3833333 0.4000000 0.4166667 0.4333333 0.4500000 0.4666667 0.4833333 0.5000000 0.5166667 0.5333333 0.5500000 0.5666667 0.5833333 0.6000000 0.6166667 0.6333333 0.6500000 0.6666667 0.6833333 0.7000000 | -5.2378912E-02 -5.3450510E-02 -5.4416787E-02 -5.5285651E-02 -5.6063920E-02 -5.6757595E-02 -5.7371974E-02 -5.7911769E-02 -5.8381215E-02 -5.8784135E-02 -5.9124004E-02 -5.9403986E-02 -5.9626985E-02 -5.9795674E-02 -5.9912533E-02 -5.9979856E-02 -5.9999771E-02 -5.9979856E-02 -5.9912533E-02 -5.9795674E-02 -5.9626985E-02 -5.9403986E-02 -5.9124004E-02 -5.8784135E-02 -5.8381215E-02 -5.7911769E-02 -5.7371974E-02 -5.6757595E-02 -5.6063920E-02 |
| 0.7166666 0.7333333 0.7500000 0.7666667 0.7833334 0.8000000 0.8166667 0.8333333 0.8500000 0.8666667 0.8833333 0.9000000 0.9166667 0.9333333 0.9500000 | 5.7380911E-02 5.4491363E-02 5.1532712E-02 4.8505284E-02 4.5409124E-02 4.2244080E-02 3.9009728E-02 3.5705391E-02 3.2330163E-02 2.8882924E-02 2.5362298E-02 2.1766679E-02 1.8094227E-02 1.4342913E-02 1.0510445E-02 | 0.7166667 0.7333333 0.7500000 0.7666667 0.7833333 0.8000000 0.8166667 0.8333333 0.8500000 0.8666666 0.8833333 0.9000000 0.9166667 0.9333333 0.9500000 | -5.5285651E-02 -5.4416787E-02 -5.3450510E-02 -5.2378912E-02 -5.1192816E-02 -4.9881365E-02 -4.8431545E-02 -4.6827488E-02 -4.5049436E-02 -4.3072209E-02 -4.0862702E-02 -3.8375780E-02 -3.5546843E-02 -3.2277219E-02 -2.8401444E-02 |
This aerofoil profile as shown in Figure 1, maximum ga(u)ge is about: d=0.1570, the maximum ga(u)ge position is: x
d=0.35; Camber is: f=0.0229, x
f=0.2167.Trailing edge x
R=0.95 place is the arc transition of R=0.0208 with the radius.
Can obtain bigger lift coefficient by maximum ga(u)ge and the camber that increases aerofoil profile, but increase camber and thickness can worsen the mobile performance of aerofoil profile under off-design condition.Consider the operating mode scope that is used for the current power generation water turbine, choose less camber and less maximum ga(u)ge.Like this, though sacrifice the airfoil performance of (20 °～20 °) under a part of conventional angle of attack, its superior off design performance is enough to remedy the loss that the former brings for the water turbine performance.
Compare with common Airfoil Design, consider the off design performance of aerofoil profile, when this aerofoil profile of design, move behind the position with maximum ga(u)ge intentionally.Analyze near reverse flow angle (angle of attack is 180 °), point of maximum thickness moves to the trailing edge direction, can improve the reverse acting ability of aerofoil profile, and the reverse lift coefficient of aerofoil profile is increased.From the forward flow angle, point of maximum thickness also is difficult for too close leading edge.This mainly be because, after the too close leading edge of point of maximum thickness, " point " leading edge to walk around aerofoil profile of flowing and sharply quickening, the reach of pressure minimum point, the corresponding deterioration of adverse pressure gradient, and cause too early generation commentaries on classics to be twisted and corresponding loss of lift, after moving after the point of maximum thickness, the position of pressure minimum value can be pushed as far as possible to the rear portion of aerofoil profile, make aerofoil profile leading portion boundary layer stable, separation point is postponed, and helps the acting of aerofoil profile leading portion convex surface, thereby the performance of aerofoil profile can be improved on the whole.
For conventional aerofoil profile, if the angle of attack near 180 °, then aerofoil profile is to meet stream with thin airfoil trailing edge, the mobile thin wing that is similar to of aerofoil profile front end flows, air-flow separates very early in the upstream.Than under the Low Angle Of Attack, fluid is very fast again attached to airfoil surface.Near the rear end time, bigger aerofoil profile leading-edge radius worsens the fluid adverse pressure gradient, separates once more, forms bigger separation whirlpool.Along with the angle of attack increases, front end adheres to the whirlpool and separates the whirlpool with the rear end and increase gradually, draws close mutually, and interaction between the two strengthens, and integrating in final two whirlpools, forms thin wing stall.So, consider the defective of conventional aerofoil profile, when this aerofoil profile of design,, be the arc transition of R/c=0.0208 with the radius specially at trailing edge x/c=0.95 place, increasing the trailing edge radius of aerofoil profile, thus the influence of weakening thin wing stall.
In addition, because trailing edge is with arc transition, therefore more blunt outer rim makes foreign object reduce to minimum to the damage of aerofoil profile, and is easy to processing.
When Re is 5 * 10
5The time, the liter of this aerofoil profile, resistance coefficient are shown in Fig. 2～5.
1. Fig. 2 and Fig. 3 are respectively 0～180 ° of the angle of attack, 180～360 ° wing section lift coefficient plotted curve.
Find out that by Fig. 2, Fig. 3 though in the conventional angle of attack (340～360 °, 0～20 °), compare with other aerofoil profiles, lift coefficient reduces to some extent, when angle of attack=16 °, lift coefficient C
L=1.25; When angle of attack=350 °, lift coefficient C
L=1.3.But find, near its reverse aspect of performance (angle of attack is 180 °), this airfoil performance is improved largely, when angle of attack=156 °, lift coefficient | C
L|=1.08; When angle of attack=194 °, lift coefficient C
L=0.935.
2. Fig. 4 and Fig. 5 are respectively 0～180 ° of the angle of attack, 180～360 ° profile drag coefficient curve figure.
By finding among Fig. 4, Fig. 5 that (340～360 °, 0～20 °) compare resistance coefficient C with other aerofoil profiles in the conventional angle of attack
DChange little.Though aerofoil profile is near (angle of attack is 180 °) resistance coefficient C when reverse operation
DIncrease is arranged slightly, but this moment is because lift coefficient C
LBe greatly improved, so the ratio of lift coefficient to drag coefficient C of aerofoil profile
L/ C
DAlso improve a lot.
Since trailing edge with arc transition, therefore more blunt outer rim makes foreign object reduce to minimum to the damage of aerofoil profile, more blunt outer rim also makes the processing of aerofoil profile reduce to minimum.
Claims (2)
1, a kind of aerofoil profile that is used for the current power generation water turbine, the maximum ga(u)ge d that it is characterized in that aerofoil profile with the ratio of the chord length c of aerofoil profile is: d/c=0.1570, the maximum ga(u)ge position is: x
d/ c=0.35; Maximum camber f with the ratio of the chord length of aerofoil profile is: f/c=0.0229, x
f/ c=0.2167 is at trailing edge x
R/ c=0.95 sentences arc transition, and radius of arc R is R/c=0.0208 with the ratio of the chord length of aerofoil profile; Wherein, x
dBe the abscissa value of aerofoil profile maximum ga(u)ge place aerofoil profile, x
fBe the abscissa value of aerofoil profile maximum camber place aerofoil profile, x
RBe the abscissa value of arc transition place aerofoil profile, the coordinate axes initial point is taken at the aerofoil profile leading edge point, and abscissa x axle overlaps with chord length c, and direction is to point to trailing edge from the aerofoil profile leading edge.
2, the aerofoil profile that is used for the current power generation water turbine of claim 1 is characterized in that described aerofoil profile chord length is a unit 1, and the blade coordinate is:
Upper surface Lower surface
X Y X Y
0.0000000E+00 1.6666668E-02 3.3333335E-02 5.0000001E-02 6.6666670E-02 8.3333336E-02 0.1000000 0.1166667 0.1333333 0.1500000 0.1666667 0.1833333 0.2000000 0.2166667 0.0000000E+00 3.6133267E-02 4.9626011E-02 5.9244741E-02 6.6778749E-02 7.2925441E-02 7.8045815E-02 8.2356974E-02 8.6002566E-02 8.9084186E-02 9.1677360E-02 9.3840457E-02 9.5619962E-02 9.7053848E-02 0.0000000E+00 1.6666666E-02 3.3333331E-02 4.9999997E-02 6.6666663E-02 8.3333336E-02 9.9999994E-02 0.1166667 0.1333333 0.1500000 0.1666667 0.1833333 0.2000000 0.2166667 0.0000000E+00 -1.7037073E-02 -2.3597769E-02 -2.8401444E-02 -3.2277219E-02 -3.5546843E-02 -3.8375780E-02 -4.0862702E-02 -4.3072209E-02 -4.5049436E-02 -4.6827488E-02 -4.8431545E-02 -4.9881365E-02 -5.1192816E-02
0.2333333 0.2500000 0.2666667 0.2833333 0.3000000 0.3166667 0.3333333 0.3500000 0.3666667 0.3833333 0.4000000 0.4166667 0.4333333 0.4500000 0.4666667 0.4833333 0.5000000 0.5166667 0.5333334 0.5500000 0.5666667 0.5833333 0.6000000 0.6166667 0.6333333 0.6500000 0.6666667 0.6833333 0.7000000 9.8173790E-02 9.9006645E-02 9.9575534E-02 9.9900618E-02 9.9999622E-02 9.9888295E-02 9.9580728E-02 9.9089615E-02 9.8426431E-02 9.7601622E-02 9.6624695E-02 9.5504351E-02 9.4248563E-02 9.2864662E-02 9.1359362E-02 8.9738838E-02 8.8008754E-02 8.6174332E-02 8.4240302E-02 8.2211040E-02 8.0090500E-02 7.7882275E-02 7.5589590E-02 7.3215373E-02 7.0762195E-02 6.8232320E-02 6.5627709E-02 6.2950060E-02 6.0200755E-02 0.2333333 0.2500000 0.2666667 0.2833333 0.3000000 0.3166667 0.3333333 0.3500000 0.3666667 0.3833333 0.4000000 0.4166667 0.4333333 0.4500000 0.4666667 0.4833333 0.5000000 0.5166667 0.5333333 0.5500000 0.5666667 0.5833333 0.6000000 0.6166667 0.6333333 0.6500000 0.6666667 0.6833333 0.7000000 -5.2378912E-02 -5.3450510E-02 -5.4416787E-02 -5.5285651E-02 -5.6063920E-02 -5.6757595E-02 -5.7371974E-02 -5.7911769E-02 -5.8381215E-02 -5.8784135E-02 -5.9124004E-02 -5.9403986E-02 -5.9626985E-02 -5.9795674E-02 -5.9912533E-02 -5.9979856E-02 -5.9999771E-02 -5.9979856E-02 -5.9912533E-02 -5.9795674E-02 -5.9626985E-02 -5.9403986E-02 -5.9124004E-02 -5.8784135E-02 -5.8381215E-02 -5.7911769E-02 -5.7371974E-02 -5.6757595E-02 -5.6063920E-02
0.7166666 0.7333333 0.7500000 0.7666667 0.7833334 0.8000000 0.8166667 0.8333333 0.8500000 0.8666667 0.8833333 0.9000000 0.9166667 0.9333333 0.9500000 5.7380911E-02 5.4491363E-02 5.1532712E-02 4.8505284E-02 4.5409124E-02 4.2244080E-02 3.9009728E-02 3.5705391E-02 3.2330163E-02 2.8882924E-02 2.5362298E-02 2.1766679E-02 1.8094227E-02 1.4342913E-02 1.0510445E-02 0.7166667 0.7333333 0.7500000 0.7666667 0.7833333 0.8000000 0.8166667 0.8333333 0.8500000 0.8666666 0.8833333 0.9000000 0.9166667 0.9333333 0.9500000 -5.5285651E-02 -5.4416787E-02 -5.3450510E-02 -5.2378912E-02 -5.1192816E-02 -4.9881365E-02 -4.8431545E-02 -4.6827488E-02 -4.5049436E-02 -4.3072209E-02 -4.0862702E-02 -3.8375780E-02 -3.5546843E-02 -3.2277219E-02 -2.8401444E-02
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100664193A CN1303323C (en) | 2004-09-16 | 2004-09-16 | Water turbine wingsection for ocean current generation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100664193A CN1303323C (en) | 2004-09-16 | 2004-09-16 | Water turbine wingsection for ocean current generation |
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| CN1303323C true CN1303323C (en) | 2007-03-07 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094848A (en) * | 2011-03-22 | 2011-06-15 | 上海交通大学 | Airfoil for large-scale industrial high-pressure ratio axial flow compressor |
| CN102588188A (en) * | 2012-02-13 | 2012-07-18 | 上海交通大学 | Airfoil for variable geometry current generating water turbine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1312380C (en) * | 2005-10-27 | 2007-04-25 | 上海交通大学 | Strong curved wing section of sea temperature difference energy-solar energy reboil circulation power generating steam turbine |
| CN102182622B (en) * | 2011-04-07 | 2013-05-22 | 清华大学 | Six-operating-condition bidirectional tide power generation water turbine |
| CN103244359B (en) * | 2013-05-30 | 2016-04-13 | 国电联合动力技术有限公司 | A kind of intermediate gauge airfoil fan of large fan |
| CN103573530B (en) * | 2013-10-21 | 2015-10-21 | 河海大学 | A kind of energy by ocean current generating has the turbine impeller of air guide sleeve |
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| JP6531152B2 (en) * | 2017-11-10 | 2019-06-12 | Thk株式会社 | Vertical axis type hydroelectric generator, vertical axis type hydroelectric unit, blade for vertical axis type hydroelectric generation |
| CN115593612B (en) * | 2022-12-15 | 2023-04-25 | 中国空气动力研究与发展中心空天技术研究所 | Self-balancing stall-resistant high-performance airfoil |
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| CN85201823U (en) * | 1985-05-13 | 1986-03-05 | 中国科学院广州能源研究所 | Wave power generation unit with a symmetric wing turbine |
| US6406251B1 (en) * | 1999-05-26 | 2002-06-18 | Philippe Vauthier | Bi-directional hydroturbine assembly for tidal deployment |
| JP2003206849A (en) * | 2001-11-08 | 2003-07-25 | Tokai Univ | Straight wing type wind and water turbine |
| CN1441876A (en) * | 2000-05-01 | 2003-09-10 | 通用电气公司 | Air foil configuration for wind turbine |
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| CN85201823U (en) * | 1985-05-13 | 1986-03-05 | 中国科学院广州能源研究所 | Wave power generation unit with a symmetric wing turbine |
| US6406251B1 (en) * | 1999-05-26 | 2002-06-18 | Philippe Vauthier | Bi-directional hydroturbine assembly for tidal deployment |
| CN1441876A (en) * | 2000-05-01 | 2003-09-10 | 通用电气公司 | Air foil configuration for wind turbine |
| JP2003206849A (en) * | 2001-11-08 | 2003-07-25 | Tokai Univ | Straight wing type wind and water turbine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094848A (en) * | 2011-03-22 | 2011-06-15 | 上海交通大学 | Airfoil for large-scale industrial high-pressure ratio axial flow compressor |
| CN102588188A (en) * | 2012-02-13 | 2012-07-18 | 上海交通大学 | Airfoil for variable geometry current generating water turbine |
Also Published As
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| CN1587674A (en) | 2005-03-02 |
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