Table 3.

Characteristics of different CFD algorithms.

CFD algorithms	Advantages	Disadvantages
FVM	1. Good adaptability to mesh file, can be applied on complex engineering problems	1. Truncation error is uncertain
	2. Good performance at fluid-solid interaction	2. Computational accuracy is relatively low
	3. Conservative calculation
FEM	1. Can adapt to most irregular calculation area	1. Big cost on calculation
	2. Application scope is wide	2. Relatively poor at highlighting the characteristics of object
FDM	1. Easy to program and parallel operation	1. Difficult to adjust the irregular area of mesh
	2. Fast calculating speed	2.Computational accuracy is relatively low
PM	1. Fast calculating speed	1. Inaccurate calculation of weak point pressure field
	2. Can be used to simulate the large-scale scene	2. Large amounts of particles are needed
LBM	1. High effective at computational calculation	1. Not suitable for simulating the heat transfer at Nano-scale
	2. Can be used to analyze the mesoscopic problems by linking with molecular dynamics	2. Can be only applied on incompressible laminar flow at low Knudsen