Thyristor module with radiator, alternating with thyristor
module in cascade structure installation.
A single radiator has two sets of crossover in hot runner, according to the symmetry, only take half of them in the calculation of as analysis object.
The surface is a plane of symmetry, processing for the adiabatic boundary in the calculation model;
On the surface for heating surface of joint, and the thyristor shell model for constant heat flux boundary.
Cooling water from the left side of the imported into two layers of cross flow from top to bottom, from right side out.
Model for the rest of the external surface treatment for the adiabatic boundary.
Mathematical model used in the calculation of the control equations for three dimensional incompressible fluid continuity equation and N -
S momentum and energy equations.
Computational domain for water-cooled radiator internal fluid flow region.
In the fully developed turbulence area, adopting the reflects the turbulent pulsating flow field influence of turbulent kinetic energy equations and turbulence k - stress equations
Standard turbulence model.
To establish a three dimensional temperature field model of water-cooled radiator, make the following assumptions and equivalent: (
The wastage of the device all focus on chips and evenly distributed.
Ignore mesa device and the contact thermal resistance between the water cooled radiator.
Under certain water flow, and flow of water cooled radiator and power devices, compared to the convection effect of the air natural cooling effect can be neglected.
Ignored in the process of calculation, therefore, water cooling and heat exchange between air radiator and power device.
Under certain water flow, inlet and outlet temperature difference is small, the water temperature can be thought of as the pipe is linear distribution along the flow direction, and thus can not along in the direction of flow of energy equation, greatly reduce the amount of calculation;
And ignore the difference in temperature of fluid in pipe end joint.
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