negative pressure form in the begining of simulation

- March 22, 2019 at 8:50 pm
  
  zobirockx
  Subscriber
  
  i am simulating the motion of body in water by providing the gas pressure from pressure inlet...
  
  before simulation i checked the static pressure contours they are alright.. but after the ist time step simulation i checked the contours giving bad results too negative and too large pressure fluctutaions .. what to do please help
  
  My settings are as fallow
  
  Transient, g=-9.81, axisymmetric.
  
  VOF model on with implicit body force. K-epslon ,relizable model on with scalable wall fuction
  
  Fluid mixture is water and air, define the water as secondary phase.
  
  Pressure inlet is 6bar of air.
  
  Smoothing and remeshing are turned on, six dof on, created the body having mass 500kg and ONE DOF with x=0 and y=1. Define the solid body as rigid body motion having Center of gravity (0,0).
  
  Hybrid initialization, time set size 0.0003
  
  , please suggest me what to do
- March 22, 2019 at 8:52 pm
  
  zobirockx
  Subscriber