A Numerical Study On The Effect Of Aerodynamic Devices On The Tractor ?��?Trailer Sino Truck(Model 321 ) :A Case Study Of Mesfine Industrial Engineering Plc.

Abstract

Reducing The Fuel Consumption Of Sino Truck(Model321) Is One Of The Most Great Issues Within The Automotive Industry And Other Company. Together With The Increased Fuel Price, The Development Of More Fuel Efficient Sino Truck Has Escalated. Fuel Reduction For Trucks Showed That Aerodynamic Improvement Is One Of The Most Important Technique When It Comes To Fuel Saving. Sino Truck(Model321) Has A Well Established Aerodynamic Focus In The Product Development Process Of The Tractor And Trailer Aerodynamics. Different Aerodynamic Trailer Devices And Aerodynamically Shaped Tractor-Trailers Gap Have Been Tested By Means Of Computational Fluid Dynamics, In Order To Investigate Their Influence On The Flow Around The Sino Truck. In Addition, Drag Contribution From Different Regions Are Analyzing To See Where It Is Possible To Gain Most Drag. Finally, An Evaluation Was Done To See If The Results From The Simulations Could Promote Any Possible Aerodynamic Profits Of A Mutual Development Between Tractor And Trailer Manufacturers. Devices That Are Implemented In The Undercarriage And Base Region Presented The Best Results, Which Indicates That These Regions Are Most Susceptible For Drag Improvements. Devices Placed At The Rear Face Of The Trailer Improved The Flow From The Roof And The Upper Sides. The Gap Treatment Improved The Flow Over The Gap And Along The Trailer Roof, Although A Larger Gap Clearance Would Probably Have Amplified The Effect Of These Devices. Profits Of Such Mutual Development Can For Example Be That The Gap Could Be Further Reduced, And The Interface And Flow Transition Between The Cab, The Trailer, The Tractor And The Trailer Undercarriage Can Be Optimized. Sino Truck (Model 321) Subjected To 43.2km/Hr Crosswind At The Different Speed From 64km/Hr Up To 96km/Hr .The Results Of The Driving Cfd Are Compared With Result Of Yawing Moment(Myawing),Rolling Moment(Mrolling) And Pitching Moment(Mpitching) Values Are Smaller Than Each Result Of Rotational Resistance(Mrr), Yawing Resistance(Myr), Pitching Resistance(Mpr).