舰船模型后甲板流场特性研究

An Investigation on Flow Field Characteristics around Aft-Deck of Carrier Model

针对车载舰模后甲板流场测量，开发了一种三丝热线探头，测量出三维流场速度和方向。试验是在汽车载着舰船模型沿机场跑道直线行驶下进行的，通过改变模型与车身轴线的夹角β，以满足试验时不同合成风向的要求。结果表明，模型甲板前沿流动分离形成一定的＂死水区＂，流场十分复杂。车载规模试验在国内尚属首例，它为热线技术在外场测试的发展积累了一些经验。文中还阐述了三丝热线探头研制、工作原理、处理方法、外场数据测量及舰船模型后甲板流场测量结果分析等。

A new 3-wire probe is presented,which is mainly used to measure the aft-deck flow field of a carrier model. A survey of three-dimensional flow field of the aft-deck has been worked out. Mounting the carrier model on a truck and running straight on the runway,the test was carried out. The setting angle 5 between the symmetrical plans of the model and the truck may be changed to meet the wind incidence requirements. It is revealed that a dead-water zone formed on the front of aft-deck is quite complicated. This is the first example in China. Through this test,more experiences of hot-wire techniques in field work are accumulated. Beside those outlined previously,the development of a 3-wire probe,the method of data acquisition and processing in field work,and the result and analysis of flow field around the aft--deck of a carrier model are briefly discussed.