Issues regarding using Aspen to simulate the viscosity of high-pressure natural gas
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Recently, a calculation required the viscosity of high-pressure natural gas (around 4.0 Mpa), and after a long search, no accurate and reliable formula for natural gas viscosity was found; the internet suggested using the Aspen property module for simulation. However, various physical property methods have been tried without yielding any results; I would appreciate advice from experts in the chemical industry: 1. How can the viscosity of high-pressure natural gas be calculated with high precision? Are there any authoritative standard calculation methods such as those defined by ISO or GB? 2. How to choose the correct property method for calculating viscosity in Aspen simulations? Thank you very much!
Calculate using HYSYS. The PR equation is sufficient.