Mechanical Engineering

1)      Natural convection heat transfer on a surface depends on a)      Geometry of the surface b)      Orientation of…

1)       a)      In the absence of other forces, the net vertical force acting on a body…

1)       b)      Boundary conditions:   c)      Initial condition:  d)      Solution:  2)               Dimensionless heat transfer coefficient 3)                     Dimensionless time also denoted by τ…

3)      Criteria for Lumped System Analysis a)      Characteristic length  b)      Biot Number Bi c)      When a solid body is being heated…

1)    Assumptions a)      Steady operation with no heat generation b)      Thermal conductivity k of the material to remain constant. c)      Convection…

1)      The rate of heat transfer from a surface at a temperature  to the surrounding medium at is…

CylinderSphere

CylindersSpheres     CylinderSphere

1)      Reducing Thermal Contact resistance a)      The thermal contact resistance can be minimized by applying thermally conducting…

ConductionConvectionRadiationConsider a plane wall of thickness L and average thermal conductivity k. The two surfaces of the wall…