应用改进TOPSIS法的舰船气流场方案评价

为解决大型舰船甲板气流场评估阶段决策方法相对缺乏的问题,针对其各个影响参数之间评价的相似性的特点,初步构建舰船气流场评估指标体系,并将邓氏和斜率灰色关联度法相结合,改进了TOPSIS法.在此基础上,数值模拟了相同工况条件下3艘国外大型舰船的甲板空气流场状态,根据起飞、降落跑道速度和甲板面涡系变化等一系列评价气流场的关键参数,提出舰船甲板气流场的评价方法,进而对3艘大型舰船的甲板气流场进行综合评价.实例结果表明,应用改进TOPSIS法可以根据不同舰船气流场指标间的差异,对不同舰船甲板气流场方案予以评价,同时该方法可为今后舰船气流场评估提供一套有效、可行的新方法.

Evaluation of airflow on warship deck based on improved TOPSIS method

In order to deal with the lack of decision method during the evaluation of the airflow field on large ship decks, an initial evaluation index system of the airflow field was built according to the feature of similarity in all parameters. An improved TOPSIS method was proposed by combining the Deng''s method and the slope grey relational method. The airflow fields on three foreign ships with same working conditions were simulated. Then, an evaluation method was presented on the basis of the takeoff and landing speeds, the change of vortex and some other related key parameters. With the method, the airflow fields on the three foreign ships were evaluated comprehensively. The results show that the improved TOPSIS method can be applied to assess ship airflow schemes according to the differences between the parameters from the evaluation index system. The present method is effective and feasible to the evaluation of airflow fields on ships.