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Laser cladding exhibits highly complex heat transfer and thermo-elastic-plastic-flow changes. The multi-physics field coupling changes affect heat transfer, mass transfer, solidification, and phase transformation behavior. The quick cooling and rapid heating of the laser cladding process cause complex residual stress and deformation, which ultimately affect the quality of the cladding layer. It is...
Considering the factors of skin effect, contact resistance, natural convection and radiation, etc., Multi-physics field coupling simulation model for 3D electromagnetic, flow and temperature field of AC high voltage GIS busbar is established, power loss, temperature and gas flow distribution is calculated and analyzed, the distribution of the temperature gradient is obtained; Based on the proposed...
As a transformer main protection, gas protection is an important and traditional non-electricity protection. For internal faults of transformer, gas protection can directly response to non-electricity characteristic such as oil flow velocity, and then has higher sensitivity and reliability compared with electric protection in principle. However, for external faults, great electromagnetic force and...
The present experimental and computational study investigates an exhaust gas waste heat recovery system for vehicles, using thermoelectric modules and a heat exchanger to produce electric power. It proposes a new plane heat exchanger of a thermoelectric generation (TEG) system, producing electricity from a limited hot surface area. To investigate the new plane heat exchanger, we make a coupling condition...
Due to its high complicacy and transitoriness and closeness, resistance spot welding (RSW), which is widely employed as a major sheet metal joining technology in automotive industry, has attracted specific attentions for computer simulations since last century. In this paper, four major RSW numerical models, namely thermal model, electro-thermal model, electro-thermo-mechanical model and electro-thermal...
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