JPS58153127A - Method for measuring propeller cavitation noise of ship - Google Patents
Method for measuring propeller cavitation noise of shipInfo
- Publication number
- JPS58153127A JPS58153127A JP3608882A JP3608882A JPS58153127A JP S58153127 A JPS58153127 A JP S58153127A JP 3608882 A JP3608882 A JP 3608882A JP 3608882 A JP3608882 A JP 3608882A JP S58153127 A JPS58153127 A JP S58153127A
- Authority
- JP
- Japan
- Prior art keywords
- ship
- noise
- main engine
- boat
- auxiliary propulsion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 12
- 229910052709 silver Inorganic materials 0.000 claims description 4
- 239000004332 silver Substances 0.000 claims description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims 2
- 241000616862 Belliella Species 0.000 claims 1
- 238000005259 measurement Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 101100136092 Drosophila melanogaster peng gene Proteins 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- LWUVWAREOOAHDW-UHFFFAOYSA-N lead silver Chemical compound [Ag].[Pb] LWUVWAREOOAHDW-UHFFFAOYSA-N 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B61/00—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing
- F02B61/04—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving propellers
- F02B61/045—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving propellers for marine engines
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H3/00—Measuring characteristics of vibrations by using a detector in a fluid
Landscapes
- Engineering & Computer Science (AREA)
- Ocean & Marine Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は船のキャビテーションノイズの−ｆｆ１７ｊ績
に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the performance of ship cavitation noise.
航走する船から一生堪れろ水中雑音に紘、主機の駆動に
１来する機械音、航走に俸う船体と水との摩際ヤ造故、
造渦などによる流体音およびグーベラの回転に伴うプロ
ペラキャビチーｉ／ｗンノイズ（以下「キャビチー７ヨ
ンノイズ」という、）が倉まれる。For the rest of your life, you will be able to endure the underwater noise from a sailing ship, the mechanical sound of the main engine driving, the friction between the ship's hull and the water as it sails.
Fluid noise caused by vortices and the like and propeller cavity noise (hereinafter referred to as "cavity noise") accompanying the rotation of the goubera are suppressed.
これらの諸ノイズのうちでも機械音とキャビテーション
ノイズが主要なものであるが、従来、この両者を分離し
て精度風〈一定するの紘困−であつ九。Among these noises, mechanical noise and cavitation noise are the main ones, but conventionally these two have been separated and it has been difficult to maintain accuracy.
即ち、従来、Ｋ衆生の船から発生されゐ雑音を一定する
方法としては、
■ 菖ＩＩＩに示されるように航走中の船１の近傍にお
ｉてハイドロホンを水中に入れてＩＩＩｊｉ！すゐ方法
（第１図中意はハイドロホンを備え良欄定船である。）
、あるいは、
■ 菖ＩｖＡに示されるようにプ四ペラ島近傍の船尾４
の外Ｉ［ｉに・・イドロ本ン・を集設し、主としてキャ
ビテーションノイズ１を一定しようとする方法、
なとがある。That is, conventionally, as a method to stabilize the noise generated from the ship of K sentient beings, there are two methods: ■ As shown in Iris III, a hydrophone is immersed in the water near the ship 1 while it is sailing. Sui method (The meaning in Figure 1 is a boat equipped with a hydrophone and a good bar.)
, or ■ As shown in Iris IvA, the stern 4 near Puspera Island
There is a method that mainly attempts to keep the cavitation noise 1 constant by concentrating the hydro mains on I[i].
しかるに、■の方法においては機械音とキャビテーショ
ンノイズの分−は著しく困難であル、■の方法において
も外Ｉｋ墨等から機械音が伝播して自て命ヤビテーショ
ンノイズのみを測定することは困−である。However, in the method (■), it is extremely difficult to separate the mechanical sound and cavitation noise, and even in the method (■), the mechanical sound propagates from the outside Ik ink, etc., and only the cavitation noise can be measured. is difficult.
本発明はこのような従来方法の難点を克服ナベ（な１れ
九ものであって、キャビテーションノイズのみを正確に
測定できる方法を提供するものである。The present invention overcomes the drawbacks of the conventional methods and provides a method that can accurately measure only cavitation noise.
しかして本発明は、船の主機を駆動することによって鋏
船を航走させ鋏船の近傍において水中雑音量鳩を測定し
、次いで銀鉛のプロペラを取り外すと共に補助推進器を
装着しこの補助推進器と主−とを駆動することによって
鋏船を航走させて銀鉛の近傍において水中雑音量４を測
定し、次いで前記主機を停止して補助推進器のみを駆動
すゐことによって鋏船を航走させ銀鉛の近傍において水
中雑音量４を測定し、次式よｐキャビテーションノイズ
Ｍｅを求めるようにし九ものである。Therefore, in the present invention, a scissors boat is sailed by driving the main engine of the boat, and underwater noise noise is measured in the vicinity of the scissor boat.Then, the silver-lead propeller is removed and an auxiliary propulsion device is attached to perform the auxiliary propulsion. The scissor boat was driven by driving the main engine and the main engine, and the underwater noise level 4 was measured near the silver lead, and then the main engine was stopped and only the auxiliary propulsion device was driven to run the scissor boat. The underwater noise amount 4 was measured in the vicinity of the silver lead during navigation, and the p cavitation noise Me was calculated using the following formula.
Ｍｃ＝嶋−＜２−２＞ ・・・・・・・・・
■以下図面を参照して本発明の方法の一例を説明する。Mc=Shima-<2-2> ・・・・・・・・・
(2) An example of the method of the present invention will be explained below with reference to the drawings.
（Ｉ）まずＩＩｍ図μＬ （Ｂ）に示されるよ、うに、
船１゜にプロペラ１１を装着したままで、主機１雪を駆
動し船１０を速度Ｖで航走させ、航走中の船１゜の近傍
に停船している測定船１３１：、備えられ九へイドロホ
ン（図示せず）によって水中雑音量鳩を測定する。(I) First, as shown in IIm diagram μL (B),
With the propeller 11 still attached to the ship 1°, the main engine 1 is driven to drive the ship 10 at a speed V, and the measurement ship 131 is stopped near the cruising ship 1°: Underwater noise volume is measured by a hydrophone (not shown).
（ＩＩ）？いで、醜４図μ）、（Ｂ）に示されるように
、船１０からプロペラ１１を取）外すと共１；、４基の
船外機１４を有する補助推進＠ｉｓを船１・に装着し、
主機１２を駆動させながら、補助推進−１暴を駆動して
速度Ｖで船１０を航走させ、水中雑音量４を（１）と同
様に測定する。(II)? Then, as shown in Figure μ) and (B), remove the propeller 11) from the ship 10 and install an auxiliary propulsion @is with four outboard motors 14 on the ship 1. death,
While driving the main engine 12, the auxiliary propulsion unit 1 is driven to sail the ship 10 at a speed V, and the underwater noise amount 4 is measured in the same manner as in (1).
＠）次いで主機１！を停止し良状態で（Ｉ）と同様に補
助推進器ＩＩを駆動させ適度Ｖで船１・を航走させて、
水中雑音１に’ｓを測定する。@) Next is main engine 1! Stop and in good condition, drive the auxiliary propulsion unit II as in (I) and sail the ship 1 at a moderate V.
Measure underwater noise 1's.
キャビテーションノイズＭａ１１次式にょ）算出畜れる
。Cavitation noise Ma11 degree equation) can be calculated.
Ｍｏｗ Ｍ、 −（Ｎ１− Ｍ、 ） ・
・・−・・・■以下に０式の説明を行５． ゛
前述のように、航走中の船から発生される音としては中
ヤビテーションノイズＮｃと、主機の駆動に由来する機
械音ＭＭと、流体音りとがある。即ち、上記（Ｉ）にお
ける測定音Ｍ、は、
鳩ｍ ＮＯ＋ ’Ｍ＋リ ・、、−、、、、
ｇ）と表せる。これらのＭｅ、 Ｍ、 Ｎ、４＝ついて
は、一般的にＭｅとＭ−主要なものであって、Ｎ１！４
一ついては１千ＭＭよ〉も小さく無視することができる
。そのため０式は次のように表すことが可能である。Mow M, -(N1- M, ) ・
・・・－・・・■ Below is an explanation of formula 0 in line 5.゛As mentioned above, the sounds generated by a ship during navigation include medium yavitation noise Nc, mechanical noise MM originating from the drive of the main engine, and fluid noise. That is, the measurement sound M in the above (I) is as follows.
g). These Me, M, N, 4 = are generally Me and M - the main ones, and N1!4
Even 1,000 MM is so small that it can be ignored. Therefore, equation 0 can be expressed as follows.
Ｍ、 麿Ｍｌ） ＭＭ ・・・・・
・・・・■上記（ＩＩ）によって一定されたｔ鵬は主機
による機械音Ｍ４補助推進器ＩＩのキャビテーシ盲ンノ
ズル鴫１、総流体音り及び船外横置Ｍ１４の和であるか
ら、
Ｍ、ｓｍ ＭＭ＋ Ｍ、、 ＋ Ｍ）＋菖１４
・・・・・・・・・■と表せる。M, Maro Ml) MM...
・・・・■The constant tpeng according to (II) above is the sum of the mechanical noise from the main engine M4, the cavity blind nozzle of the auxiliary propulsion unit II, the total fluid noise, and the horizontal outboard M14, M, sm MM+ M,, + M)+Iris 14
It can be expressed as ・・・・・・・・・■.
ま九、上記（ＩＩＩ）によって測定され大音４は、０式
において主機による機械音−が無いものであるから、
Ｍ８厘Ｎ、十Ｎ番十Ｎ４ ・・・・・・−
・■と表せる。Nine, the loud noise 4 measured by the above (III) is the one in which there is no mechanical sound from the main engine in Type 0, so M8 rinN, 10Nban 10N4...
・It can be expressed as ■.
０式及び０式の両辺の差をとると、
八−Ｍ、 ＝ｘ ＮＭ、−・・−一・０■式を０２式に
代入すれば
鵬ｗｍ Ｍ＠＋ （ヘーヘ） ・・・・・・
・・・０従って、ｌｌＱａｗ鴫−（”ｍ−”ａ ）
・・・・・・・・・■となる。Taking the difference between both sides of formula 0 and formula 0, we get 8-M, =x NM, -...-1・0■ Substituting formula into formula 02, we get Peng wm M@+ (hehe)...・
...0 Therefore, llQaw 紫-("m-"a)
・・・・・・・・・■.
上記の説明においてはへ、へ及び４をｉｗ＊するに際し
ては、航走中の船１０の近傍に測定船鼻３を停止させて
おいて測定を行つ九が、ハイドロホンを第２図のように
船底外１ｊ４二突設し九ル、まえはハイドロホンを備え
九測定器具を索を介して船１ｏ＋＝’％航させるよ５１
ニジても嵐い。In the above explanation, in order to iw* from to, to, and 4, the measuring ship nose 3 is stopped near the sailing ship 10 and the measurement is carried out. As shown, two protrusions are installed on the outside of the ship's bottom, and a hydrophone is installed in front of the ship.
Even if it's a storm, it's stormy.
ま九上記測定方法においては、補助推進器１ｉには船外
機１４が設けられていゐ、この船外機からの音の大部分
は水面（海面）五６によって反射されゐので、ハイドロ
ホンによる測定紬釆の精度が一層高くなるという効果が
ある。(9) In the above measurement method, the auxiliary propulsion device 1i is equipped with an outboard motor 14, and since most of the sound from this outboard motor is reflected by the water surface (sea surface) 56, it is difficult to hear the sound from the hydrophone. This has the effect of further increasing the accuracy of the measurement.
以上拝述し九過如本発明によれば船のキャビテ−ション
ノイズを正確に媚定することが可能である。As described above, according to the present invention, it is possible to accurately measure the cavitation noise of a ship.
第１図及び第２８ｉｉｉは従来の測屋方法の説明図、ｊ
Ｉ ｌ ａｌｌ（Ａ）、（Ｂ）及ヒｌｌＡ４ Ｅｌ（Ａ
）、（Ｂｌ ｉｆ 本Ｍ 明）６１ 定力法の説明図で
ある。
１０・・・船、 １１・・・グロベラ、１２
・・・主機、 １３・・・計測船、１４・・
・４嚇船外機、 １５・・・補助推進器。
第１図
第２図Figures 1 and 28iii are explanatory diagrams of the conventional surveyor method, j
I l all (A), (B) and Hll A4 El (A
), (Bl if Book M 明) 61 This is an explanatory diagram of the constant force method. 10...Ship, 11...Globera, 12
...Main engine, 13...Measurement ship, 14...
・4 warning outboard motor, 15... auxiliary propulsion device. Figure 1 Figure 2
Claims (1)
走させ鋏船の近傍において水中雑音量−ｔＩｌｌ定し、
次＾で鋏船のプロベラを取り外すと共に補助推進器を銀
層し主機を駆動させつつこの補助推進ａＩ：よって鋏船
を航走させ鋏船の近傍において水中雑音量４を一定し、
次いで―記主機を停止して補助推進器のみを駆動して鋏
船を航走させ鋏船の近傍において水中雑音量菖島管測定
し、次式よジグ四ベラキャビテーションノイズＭＣを求
めることを特徴とす１船のプロペラキャビテーシ冒ンノ
イズの測定方法。 ＭｃなＭｌ−（Ｍｌ−ＭＳ ）[Claims] (Supervisor) Driving the main engine of the ship 1: Therefore, determining the amount of underwater noise -tIll in the vicinity of the scissor boat by running the silver lead,
Next, remove the prober of the scissor boat, put the auxiliary propulsion device in a silver layer, and drive the main engine while this auxiliary propulsion aI: Therefore, the scissor boat is sailed and the underwater noise level 4 is kept constant near the scissor boat,
Next, the main engine is stopped, only the auxiliary propulsion unit is driven, the scissor boat is sailed, the underwater noise volume is measured near the scissor boat, and the jig four bella cavitation noise MC is determined by the following formula. Method for measuring propeller cavity noise on a ship. Mc Ml- (Ml-MS)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3608882A JPS58153127A (en) | 1982-03-08 | 1982-03-08 | Method for measuring propeller cavitation noise of ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3608882A JPS58153127A (en) | 1982-03-08 | 1982-03-08 | Method for measuring propeller cavitation noise of ship |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58153127A true JPS58153127A (en) | 1983-09-12 |
Family
ID=12459991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3608882A Pending JPS58153127A (en) | 1982-03-08 | 1982-03-08 | Method for measuring propeller cavitation noise of ship |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58153127A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010037425A (en) * | 1999-10-16 | 2001-05-07 | 김징완 | Method for measurement noise of cavitation using detection electromagnetic wave |
| JP2009288104A (en) * | 2008-05-29 | 2009-12-10 | Ihi Corp | Underwater sound measurement apparatus of towed model ship, and method for the same |
-
1982
- 1982-03-08 JP JP3608882A patent/JPS58153127A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010037425A (en) * | 1999-10-16 | 2001-05-07 | 김징완 | Method for measurement noise of cavitation using detection electromagnetic wave |
| JP2009288104A (en) * | 2008-05-29 | 2009-12-10 | Ihi Corp | Underwater sound measurement apparatus of towed model ship, and method for the same |
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