Design, Numerical Analysis and Development of Portable Defogger Duct for Road Vehicles

Abstract

Formation Of The Fog On Windshield And Window Glasses Obstructs The Visibility Of The Drivers. A Defogger Is Used In Cars To Remove Ice Or Condensation From The Window Glass. The Objective Of This Thesis Is To Designs And Performs A Numerical Analysis Of The Portable Side And Windshield Glass Window Defogging Of An Automobile. As Part Of This Work, The Defogger Duct Nozzle Is Built Utilizing Stated Boundary Conditions For Vehicle Defrosting In A Lab Experiment Which Uses Recommended Exit Port Air Speed According To Federal Motor Vehicle Safety Standards (Fmvss) In The United States And The Society Of Automotive Engineering Sae. The Simulation Begins With A Portable Duct Layout That Equally Distributes The Flow In The Exit Port At A Speed Of 6 M/S. K-Epsilon Turbulence Model Is Used In Duct Flow Design To Mimic Cold Air With Steady-State Performance. The Final Form Of The Duct Nozzle Is Used As The Primary Design. The Duct Design Is Later Finished, And A Full-Scale Toyota Hiece 2004 Quarter Model Is Used To Study Numerical Simulation Of The Automotive Defogs Process. An Eulerian Wall Film Multiphase Flow Model From Ansys Fluent Is Used To Carry Out The Simulation. The Average Non-Movable Liquid Water Film Thickness Of 315.4?? M And 337.2 ??M Based On Measurements Made Using The Ultrasonic Pulse-Echo Technique (Upem) And Diode Laser Absorption Spectroscopy, Respectively, Is Applied To The Window Glass In Accordance With Experimental Results From Prior Work. In Order To Replicate Film Thicknesses Of 1.4mm, 1.05mm, 0.7mm, And 0.35mm, Hot Air Velocity Is Pumped From The Exit Part Of A Duct To The Film Surfaces On The Glass Windows. The Distinctive Output Parameter Predicted Here Is The Volume Percentage Of The Water Film That Changed After A Particular Flow Interval. The Defogging Performance Simulation Needs 1500, 2500, 3000, And 3500 Seconds For Each Of The Four Possible Film Thicknesses, Respectively, To Clear The Surface Of All Condensed Water. Finally, Obtaining A Quick Defogging Time That Prevents The Ice From The Surface Is The Greatest Alternative For This Research. Therefore, The 0.35mm 1500 Second Time Delay Film Is A Carefully Chosen Film Thickness For A Highly Portable Defogger Machine For Three Windows. To Develop A Portable Defogger With Minimal Energy Consumption That Gets Its Power From A Solar Panel Or Alternator Via A Battery. The Designee Chose The Heater, Fan, And Battery Sizing After 1500 Seconds. A Prototype Has Been Developed For Exhibition And Operational Testing Made Based On The Final Defogger Duct Nozzle And Component Sizes. Finally, The Functional Tested Prototype Takes Around 1420 Second Which Is Reliable With The Numerical Obtained Defogging Time Which Consumes 2kw Power With 1500 Seconds That Can All Widows?�? Surfaces Dries.