介绍了Navier-Stokes方程和商用求解器中包含的两方程湍流模型在扁平椭圆形管道弯头内不可压缩粘性湍流流动中的应用，以预测压力损失。目的是确定计算流体（CFD）动力学是否可用于充分预测HVAC管道系统配件和配置的压力损失系数。声明数据支持CFD方法可用于高效准确地确定管道系统损失系数的说法。关键词:1997年，计算，管道，流体流动，气流，弯管，可行性，准确性，湍流，椭圆，压降引用:ASHRAE Trans。1997年，卷。 103，第1部分，论文编号4027（RP-854），172-177，图11，表1，参考文献

Describes the application of the Navier-Stokes equation and a two-equation turbulence model contained within a commercially available solver to an incompressible viscous turbulent flow within a flat oval ductwork elbow for prediction of pressure loss. The aim was to determine whether computation fluid (CFD) dynamics could be used to adequately predict pressure loss coefficients for HVAC ductwork fittings and configurations. States the data support the claim that CFD methods may be used to determine ductwork loss coefficients efficiently and accurately.KEYWORDS: year 1997, Calculating, ducts, fluid flow, air flow, bends, feasibility, accuracy, turbulent flow, elliptic, pressure drop