Mechanical Engineering

# ABHISHEK KARN

Members

12

## Profile Information

• Gender
Male
• Location
India
• Engineering Qualification
B.TECH
• Year of completition
2018
• Name of Institute
SANT LONGOWAL INSTITUTE OF ENGINEERING AND TECHNOLOGY

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1. ## mesh density

Try adding layers with smooth transition and growth ratio. I have not used Ansys much but if it was the case in Hypermesh, mesh density can be easily achieved by splitting the surfaces into smaller parts and chosing smaller mesh sizes for near to boundary locations. Another feature in Ansys, I think you can use is adding sphere of influence with proper values. Hope this helps
2. ## 2D Or shell mesh vs 3D mesh

Mesh generation is a vital step for any simulation be it structural, NVH Or CFD. It involves breaking the entire model or domain (which is the geometry) into small elements with certain qualities. A more technical term for this process would be discretizaion. Why would you need this in the first place! Well any geometry can be broken into infinite number of parts and if you are going to apply governing equations on them for solving a case, solver would go crazy as it'll have to solve them for Infinite number of inputs. This is tackled by dividing the geometry into a finite number of chunks or pieces called elements. And this process is termed as meshing. There are basically two types of mesh used ; 2D or shell mesh and 3D or solid mesh. Now a simple guess would be 2D mesh can be used for 2D geometries and 3D for solid geometry right! But in actual practice for certain 3D components you can very well go for shell mesh or 2D mesh. Actually for plastic and sheet metal components which are having a uniform thickness a mid plane is extracted out of the solid model. Mid planing or mid surface generation is a very delicate process in itself, it requires a CAE engineer to have basic grasp of CAD modelling like surface generation, boolean operations etc. After that the crated mid surface is meshed with 2D elements and thickness is assigned to them in such a way that half of the value goes in upper side and half in the lower side. This approach saves precious resources in carrying out the simulation as 3D mesh is always heavier for the solver than a 2D or shell mesh.
3. ## use of Compressed air

Design the tank just like a cylinder with a piston in it. Let the water come in from upper side and as the hydrostatic pressure increses piston will move and compress air which can be further used to operate some suitable valve. After the completion of a stroke let the stored water pass through the piston (here some kind of valve will be needed) . Further get the piston spring loaded so that it will shoot up to TDC for second cycle.
4. ## Final Project

What about trying springs for propelling vehicles in a way similar to spring loaded toy cars!....It may sound crazy.....but its just an idea...you can work on it and design something good ...
5. ## Next advancement in automobile engine.

Nothing has ever been in its final stage. There's alaways possibility of betterment! As far as the unconventional sources are concerned I think nuke is the most potent one. Recently an interesting breakthrough was made when guys tried to use the radioactive material for laser light production and further heating water with it. So don't stop dreaming...!!
6. ## Next advancement in automobile engine.

Nothing has ever been in its final stage. There's alaways possibility of betterment! As far as the unconventional sources are concerned I think nuke is the most potent one. Recently an interesting breakthrough was made when guys tried to use the radioactive material for laser light production and further heating water with it. So don't stop dreaming...!!
7. ## Windmill Integrated Train

Lets not put the barriers of thermodynamics like PMMI or PMMII! Altogethor its a nice idea ....go ahead with it. I think installing a windmill sort of thing on train will increse drag but in a partially wind powered vehicle if we drive it in the direction opposite to wind direction we'll have the advantage of a sail as well as a wind turbine!
8. ## lever drive for bicycle

Hello everyone Last year I just tried copying it. It wasn't welcomed by my professors. It is about designing a new and rather efficient drive for bicycle. Watch the video at least for fun...http://m.youtube.com/watch?v=gDH_OcepG4s
9. ## Reduce the Noise

Use better silencer and muffler....moreover better casing and vibration damping will add to quietness of the utility vehicle....
10. ## A Solution to farmers ordeal in polders;Hovercraft Based Sowing Device

Thats a pretty well idea. I would like to suggest you to add some kind of metering device to regulate seed flow. Thanks
11. ## balanced canopy umbrella

Thank you sir am waiting for your guidelines.
12. ## balanced canopy umbrella

Hello everyone , I have been thinking about designing an umbrella that can sustain high speed storms by transforming the wind energy into some kind of rotational energy. I think developing mechanics for the frame of canopy and outer structure design would do! Any help ....
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