Wave Surface of Thermal Layer

This paper advances a new physics concept, wave elements developed in flow. A wave element is the wave surface of thermal layer between two temperatures in the fluid if the fluid is not at a uniform temperature. It is generated by density difference which results from temperature difference in the flow. At non-equilibrium conditions, temperature differences exist in each part of a fluid. When the fluid is in motion, wave elements are generated among molecule groups. Wave motion and Brownian motion may be the two basic forms of motion of molecules in flow. Brownian motion is controlled by temperature. Wave elements are caused by temperature differences and the motion of the fluid. The analysis is supported by the experimental data and is further confirmed by the relationship of continuity. The salient finding is that wave motion maybe the origin of flow, such as laminar flow and turbulence flow.