Asadikia H, Aminipour F, Mozaffari A, Khodabandeh Z, Kia SM. Numerical Investigation of Freezing Time in Circular and Flattened Pipes Using CFD: Effects of Geometry and Flow Conditions. J. Environ. Eng. Energy. 2026;3(1):1-22. doi:10.22105/jeee.v3i1.59