空气室位置对脉冲水射流的影响

doi:10.3863/j.issn.1000-2634.2006.02.023

西南石油大学学报(自然科学版) ›› 2006, Vol. 28 ›› Issue (2): 89-91.DOI: 10.3863/j.issn.1000-2634.2006.02.023

空气室位置对脉冲水射流的影响

蒲家宁高松竹陈明

(解放军后勤工程学院，重庆 400016)

收稿日期:2005-10-16 修回日期:1900-01-01 出版日期:2006-04-20 发布日期:2006-04-20
通讯作者: 蒲家宁

STUDY ON THE EFFECT OF AIR-CHAMBER' S SITE UPON PULSED WATER-JET

PU Jia-ning GAO Song-zhu CHEIV Ming.

(Logistics Engineering University, Ehongqing 400016,China)

Received:2005-10-16 Revised:1900-01-01 Online:2006-04-20 Published:2006-04-20
Contact: PU Jia-ning

摘要/Abstract

摘要： 应用水力瞬变特征线解法，建立设有空气室的永冲水射流系统的数学模型，差分网格只取脉冲源、空气室和喷嘴三个边界点，用所创立的变时步法解算。算例说明，空气室的位置时射流有重要影响，应当按各系统的具体情况正确设置，以取得增强脉冲水射流的效益。

关键词: 脉冲水射流, 空气室, 水力共振, 水力瞬变, 特征线解法, 变时步法

Abstract: The paper structures the mathematic models for analyzing the phenomena of pulsed water-jet of a system embodied air-chamber was established with the method of the hydraulic transi-ent characteristic stream. The differential grid had three bounda-ries only, pulse source, air-chamber and nozzle, and none inte-rior node being needed. For the lengths of upstream and down-
stream sections may be unequal, using the novel Variable Time Step Method is necessary. The sample computation was show that, in order to induce an acceptable hydraulic resonance to strengthen pulsed water-jet. The air-chamber should be posi-boned correctly according to the concrete condition of the given system.

Key words: pulsed water-jet, air-chamber, hydraulic res-onance, hydraulic transient, method of characteristics, Variable Time Step Method

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