Different combination of the nozzle diameter and throat size is varied and done the simulations. In the afternoon, I received the actual THC geometry dimensiones and changed the THC design according to the existing dimesions. Based on the simulations results, the nozzle of 27.5mm gives around 1.rbarg discharge pressure, but required is 1.5barg. So, need to change the nozzle design to get disered pressure.