Diesel vs petrol engine. Boundary friction. Fig 1 lubrication regime. Nissan KA24DEStrainer 1. Automotive oil pump. Tr6 oil spinon. Water. Air cooled. Heat travels. Thermal conduction. Heat conduction (or thermal conduction) is the transfer of internal energy by microscopic diffusion and collisions of particles or quasi-particles within a body due to a temperature gradient.
The microscopically diffusing and colliding objects include molecules, electrons, atoms, and phonons. They transfer disorganized microscopic kinetic and potential energy, which are jointly known as internal energy. Conduction can only take place within an object or material, or between two objects that are in direct or indirect contact with each other. Convective heat transfer. Simulation of thermal convection.
Red hues designate hot areas, while regions with blue hues are cold. A hot, less-dense lower boundary layer sends plumes of hot material upwards, and likewise, cold material from the top moves downwards. This illustration is taken from a model of convection in the Earth's mantle. The term convection can sometimes refer to transfer of heat with any fluid movement, but advection is the more precise term for the transfer due only to bulk fluid flow. Convective heat transfer. Diffrent typoes of chamber. 4 stroke cycle. Cylinder head.
Cylinder block.