Issue link: https://resources.randsim.com/i/1543873
©2026 ANSYS, Inc. 11 Buoyancy Force using Fluid Expansion Coefficient Beta Natural convection on SPH models for predicting wall heat transfer rate at complex boundary (Beta). • Purpose: Enable natural convection in SPH via thermal buoyancy • Model: Boussinesq approximation (density varies only in gravity term) • Formulation: Adds buoyancy acceleration to SPH elements