Evaluation and Optimization Design for Microclimate Comfort of Traditional Village Squares Based on Extension Correlation Function

Table 3

Setting of environment simulation parameters.

Parameter	Input
Latitude	Latitude of the village (29.72°N for Zoumatang village)
Turbulence model	RANS k – ε (close to the result of wind tunnel test [28])
Discretization equation	Simple, PRESTOL
Wind profile function	Wind velocities obeying exponential distribution, α = 0.16
Radiation model	IMMERSOL
Computational domain	On the edge of building(s), the boundary of the computational domain is 7 times of the height H of the building in the horizontal direction, and 6 times of H in the vertical direction. Hence, the windward profile blocking rate is smaller than 3%.
Grid division	There are no fewer than 5 grids in the space 1.5 m above the ground; the grid expansion rate is 1.2; grid independence is verified.
Convergence residual	The residue is within 10^−4; the imbalance of the equation is within 1%; the value of the representative monitoring points in the flow field does not change or fluctuates about a fixed value.
Direct solar radiation	Following the code for thermal design of the civil building (GB 50176-2016), or local specifications
Diffuse solar radiation
Air temperature	Referring to the measured data over the village and the perennial data on Weather Spark
Wind velocity (h = 10 m)
Wind direction
Relative humidity
Temperature
Air pressure