CN104117447A - Spraying parameter control method for icing test - Google Patents
Spraying parameter control method for icing test Download PDFInfo
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- CN104117447A CN104117447A CN201310144941.8A CN201310144941A CN104117447A CN 104117447 A CN104117447 A CN 104117447A CN 201310144941 A CN201310144941 A CN 201310144941A CN 104117447 A CN104117447 A CN 104117447A
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- spraying
- water content
- liquid water
- test
- requirements document
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
- B05B12/082—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to a condition of the discharged jet or spray, e.g. to jet shape, spray pattern or droplet size
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- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention provides a spraying parameter control method for an icing test. The water flow needed for spraying is primarily determined according to liquid water content required by the test, the water flow of nozzles is adjusted according to a measuring result after spraying, actual liquid water content is made to meet the test requirement, and then air pressure of the nozzles and the number of opened nozzles are adjusted, so that the actual average particle diameter is made to meet the test requirement.
Description
Technical field
The invention belongs to anti-deicing experimental technique field, relate to a kind of spray parameters control method for icing tests.
Background technology
Spray parameters is parameter crucial in icing tests condition, mainly comprises Liquid water content (LWC) and mean particle diameter (MVD).Liquid water content (LWC) has a direct impact freezing with mean particle diameter (MVD), and therefore accurately controlling Liquid water content (LWC) is a most important link in icing tests with mean particle diameter (MVD).Parameter and nozzle unlatching number by adjustable spraying water source, spraying source of the gas in process of the test regulate Liquid water content and mean particle diameter.Because hydraulic pressure and the air pressure of nozzle are interrelated, be inconvenient to control, thus can first determine spray water flow, then determine spray pressure and nozzle unlatching number, thus reach the object of accurate control spray parameters.
The invention provides a kind of spray parameters control method for icing tests, can effectively carry out the spray parameters control of icing tests.
Summary of the invention
The object of the invention is: a kind of spray parameters control method for icing tests is provided, can have effectively carried out rapidly the spray parameters control of icing tests, guaranteed that process of the test spray parameters is reliable and stable.
Technical scheme of the present invention is: in process of the test, first tentatively determine the unlatching number of the required discharge of test and nozzle according to the Liquid water content of test requirements document, after spraying, regulate the discharge of nozzle according to measurement result, make actual Liquid water content reach test requirements document, adjustable spraying air pressure again, makes actual average particle diameter reach test requirements document.
For a spray parameters control method for icing tests, this method comprises the following steps:
The first step, calculates the required discharge of spraying according to experimental condition, determines the nozzle number of opening, and the required discharge Q computing formula of spraying is: Q=VSLWC, and wherein V is test section wind speed, S is test section area of section, the Liquid water content that LWC is test requirements document;
Second step, regulates parameters of pump, observes the flow value of spraying water source water flow meter, with the definite spray water flow spraying of the first step, measures actual Liquid water content;
The 3rd step: the Liquid water content of contrast reality and test requirements document, by regulating parameters of pump adjustable spraying discharge, spraying again, and measure Liquid water content;
The 4th step: repeat the 3rd step, until actual Liquid water content meets test requirements document;
The 5th step: maintain the spray water flow after adjusting, adjustable spraying air pressure, measures actual average drop diameter;
The 6th step: the average drop diameter of contrast reality and test requirements document, adjustable spraying air pressure, measures actual average drop diameter;
The 7th step: repeat the 6th step, until actual average particle diameter meets test requirements document.
Advantage of the present invention is: easy to operate simple, parameter control result is stable, the reliability of guarantee test result.
Detailed description of the invention
Below the present invention is described in further details.
In process of the test, first tentatively determine the unlatching number of the required discharge of test and nozzle according to the Liquid water content of test requirements document, after spraying, regulate the discharge of nozzle according to measurement result, make actual Liquid water content reach test requirements document, adjustable spraying air pressure again, makes actual average particle diameter reach test requirements document.
This method comprises the following steps:
The first step, calculates the required discharge of spraying according to experimental condition, determines the nozzle number of opening, and the required discharge Q computing formula of spraying is: Q=VSLWC, and wherein V is test section wind speed, S is test section area of section, the Liquid water content that LWC is test requirements document;
Second step, regulates parameters of pump, observes the flow value of spraying water source water flow meter, with the definite spray water flow spraying of the first step, measures actual Liquid water content;
The 3rd step: the Liquid water content of contrast reality and test requirements document, by regulating parameters of pump adjustable spraying discharge, spraying again, and measure Liquid water content;
The 4th step: repeat the 3rd step, until actual Liquid water content meets test requirements document;
The 5th step: maintain the spray water flow after adjusting, adjustable spraying air pressure, measures actual average drop diameter;
The 6th step: the average drop diameter of contrast reality and test requirements document, adjustable spraying air pressure, measures actual average drop diameter;
The 7th step: repeat the 6th step, until actual average particle diameter meets test requirements document.
Embodiment:
In certain icing tunnel, carry out product icing tests, setting Liquid water content is 1.0g/m
3, mean particle diameter is 20um, and test section wind speed is 70m/s, and test section sectional dimension is 0.25m × 0.35m.By calculating discharge Q=70m/s × (0.25m × 0.35m) × 1.0g/m3=6.125g/s that can show that spraying is required.Regulate parameters of pump, the flow value that makes water ga(u)ge is 6.1g/s, and now nozzle exit pressure is 0.36MPa, and it is 36 that nozzle is opened number.Spray and measure test section Liquid water content, actual Liquid water content is 0.8g/m3.Maintain nozzle and open number, regulate parameters of pump, making the flow value of water ga(u)ge is 7.2g/m3, sprays and measures test section Liquid water content, and actual Liquid water content is 1.0g/m3.Measure mean particle diameter, actual value is 25um.Spraying bleed pressure value is adjusted into 0.55MPa, and actual average particle diameter is 20um, meets test requirements document.
Claims (1)
1. for a spray parameters control method for icing tests, it is characterized in that, this method comprises the following steps:
The first step, calculates the required discharge of spraying according to experimental condition, determines the nozzle number of opening, and the required discharge Q computing formula of spraying is: Q=VSLWC, and wherein V is test section wind speed, S is test section area of section, the Liquid water content that LWC is test requirements document;
Second step, regulates parameters of pump, observes the flow value of spraying water source water flow meter, with the definite spray water flow spraying of the first step, measures actual Liquid water content;
The 3rd step: the Liquid water content of contrast reality and test requirements document, by regulating parameters of pump adjustable spraying discharge, spraying again, and measure Liquid water content;
The 4th step: repeat the 3rd step, until actual Liquid water content meets test requirements document;
The 5th step: maintain the spray water flow after adjusting, adjustable spraying air pressure, measures actual average drop diameter;
The 6th step: the average drop diameter of contrast reality and test requirements document, adjustable spraying air pressure, measures actual average drop diameter;
The 7th step: repeat the 6th step, until actual average particle diameter meets test requirements document.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310144941.8A CN104117447B (en) | 2013-04-24 | 2013-04-24 | A kind of spray parameters control method for icing tests |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310144941.8A CN104117447B (en) | 2013-04-24 | 2013-04-24 | A kind of spray parameters control method for icing tests |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104117447A true CN104117447A (en) | 2014-10-29 |
| CN104117447B CN104117447B (en) | 2016-12-28 |
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| CN201310144941.8A Active CN104117447B (en) | 2013-04-24 | 2013-04-24 | A kind of spray parameters control method for icing tests |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105728229A (en) * | 2016-03-01 | 2016-07-06 | 中国飞机强度研究所 | Rapid mist spray water drop average diameter estimation method based on nozzle power parameters |
| CN111060336A (en) * | 2019-12-06 | 2020-04-24 | 南京航空航天大学 | Ground experiment system and method for preparing porous ice layer through 3D printing |
| CN113252281A (en) * | 2021-06-02 | 2021-08-13 | 中国空气动力研究与发展中心低速空气动力研究所 | Method for reconstructing size distribution of icing cloud droplets |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5383605A (en) * | 1992-12-10 | 1995-01-24 | Hydro-Chem Systems, Inc. | Radio controlled spraying device |
| CN102107088A (en) * | 2009-12-24 | 2011-06-29 | 斯平玛斯特有限公司 | Velocity feedback control system for a rotor of a toy helicopter |
| CN102166536A (en) * | 2011-03-02 | 2011-08-31 | 中国民航大学 | An environment analogue means for surface freezing of airplanes on ground |
| CN102582843A (en) * | 2011-11-11 | 2012-07-18 | 中国商用飞机有限责任公司 | Simulation system for ice-formation condition on ground |
| CN102914416A (en) * | 2012-09-20 | 2013-02-06 | 同济大学 | Direct-cooling freezing wind tunnel realization method and direct-cooling freezing wind tunnel realization system |
-
2013
- 2013-04-24 CN CN201310144941.8A patent/CN104117447B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5383605A (en) * | 1992-12-10 | 1995-01-24 | Hydro-Chem Systems, Inc. | Radio controlled spraying device |
| CN102107088A (en) * | 2009-12-24 | 2011-06-29 | 斯平玛斯特有限公司 | Velocity feedback control system for a rotor of a toy helicopter |
| CN102166536A (en) * | 2011-03-02 | 2011-08-31 | 中国民航大学 | An environment analogue means for surface freezing of airplanes on ground |
| CN102582843A (en) * | 2011-11-11 | 2012-07-18 | 中国商用飞机有限责任公司 | Simulation system for ice-formation condition on ground |
| CN102914416A (en) * | 2012-09-20 | 2013-02-06 | 同济大学 | Direct-cooling freezing wind tunnel realization method and direct-cooling freezing wind tunnel realization system |
Non-Patent Citations (2)
| Title |
|---|
| 范洁川: "飞机结冰风洞试验模拟研究", 《实验流体力学》, vol. 21, no. 1, 31 March 2007 (2007-03-31), pages 68 - 92 * |
| 贾明 等: "冰风洞试验研究", 《江苏航空》, 31 December 2008 (2008-12-31) * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105728229A (en) * | 2016-03-01 | 2016-07-06 | 中国飞机强度研究所 | Rapid mist spray water drop average diameter estimation method based on nozzle power parameters |
| CN111060336A (en) * | 2019-12-06 | 2020-04-24 | 南京航空航天大学 | Ground experiment system and method for preparing porous ice layer through 3D printing |
| CN111060336B (en) * | 2019-12-06 | 2022-05-03 | 南京航空航天大学 | Ground experiment system and method for preparing porous ice layer through 3D printing |
| CN113252281A (en) * | 2021-06-02 | 2021-08-13 | 中国空气动力研究与发展中心低速空气动力研究所 | Method for reconstructing size distribution of icing cloud droplets |
| CN113252281B (en) * | 2021-06-02 | 2021-09-21 | 中国空气动力研究与发展中心低速空气动力研究所 | Method for reconstructing size distribution of icing cloud droplets |
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| Publication number | Publication date |
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| CN104117447B (en) | 2016-12-28 |
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