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Found 3 results

  1. Hi, I work sloshing in the basic rectangular tank with the SPH method. I will try to sloshing in a more complex structure in the future. I'm new to Radioss solver and SPH method. For this reason, there are a few things I would like to consult with you. It is clear that as the pitch size decreases, the number of particles formed increases. Increased number of particles will also increase accuracy and solution time. How is the ideal number of particles determined? I can read contact reaction force and pressure in the model I created. But as with the CFD, is it possible for me to read the fluid pressure? During sloshing, is the value I read from the pressure gauge on the test apparatus the same as the value I read on the contact surface? Thank you for your help
  2. Is it possible for Radioss to solve a transient coupled thermo-mechanical problem using smooth particle hydrodynamics? For an example, My fluid's viscosity is strongly a function of temperature, where temperature is strongly a function of strain and time, where strain is a function of temperature, viscosity, and power input. Can anyone tell me if Radioss is an appropriate solver for this type of problem?
  3. Hi everybody i'm simulating a quarter sphere entering in a tank with water; i modelled the water using SPH elements. between the surface of sphere and particles of water i use a type7 interface. i have tryed two ways: with ISTF=1 i set a STFAC=40000Pa with ISTF=0 i set STFAC=0.1 (it is a scale factor to be multiplied by the young modulus of the sphere material, i have wood with E=14500MPa so by 0.1 it is 1450MPa as interface stifness) it comes out a more larger stifness interface respect the previous one. All the rest of model is the same between the two simulations the simulation with lower STFAC seems to be less viscous than the one with bigger STFAC. I'm i wrong? Dose some know why this is the behaviour of water? What does interest the interface stifness with this kind of behaviour? Thank you to all
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