hi guys, i have a project in which i have to simulate the effects of a passing truck on a stationary vehicle (sedan) in a tunnel. Now i am totally blank on this type of analysis. Can any one guide me how to start the analysis procedure.

regards wilson

for, this you have to begin with basics or find a partner who canhelp u out....

Rohan I don't think your comments make any sense or helpful. I know Fluent, has an ad on the net about solving such a problem. Perhaps you can do a search on their website or on the internet. Good luck

Not much help, but then again: I know STAR-CD has a tutorial ( tutorial 11? ) about 2 trains passing each other. Maybe you can come up with some guidance rules from that case even though it is not the same software. Kind Regards

hai???

can any one tell me any exact answer for this with some explainations????

Wilson,

Since there is a stationary object, you'll have to model this with a sliding mesh. For this, the ends will have to be periodic. That is, you are simulating a series of moving vehicles one after the other. If you space them "very" far apart, you can approach a condition of negligible end effects for a single vehicle.

Look at the examples in CFX for using a sliding mesh with periodics. Specifically, you need a linear example (as opposed to rotational).

Good Luck, Jeff