This has been an on-going project for our CFD consulting services team during most of 2018. As we all know, there is nothing like a “site visit” to meet your fellow engineers and see hardware. In early September, Drs. Laird and Hearn visited the CRRC Changchun Railway Vehicles Co., Ltd in Changchun, China. This is a cooperative project where Predictive has partnered with Hengstar Technology, Shanghai, China (Dr. Lu Hongsheng is shown on the left of our group photo). The project work requires a complete flow and thermal analysis of Los Angeles County Metropolitan Transportation Authority (LACMTA) new passenger transit vehicle. The CFD requirements are a notch above normal specifications with tight controls on air flow volume, maximum velocity and distribution. Thermal analysis looks at vehicle cool down on hot days (transient thermal with solar radiation and lots of internal heat generation) and also thermal management within the electronics and motor drive bay at bogie level. All simulation work will be validated against vehicle mock-ups.
Changchun, China – CRRC’s Manufacturing Site
CRRC’s Bullet Train
STAR-CCM+ CFD HVAC Flow Analysis of Passenger Transit Vehicle