Table 4.

Characteristics of the mesh for tow solar still.

Object Name	Mesh	Pyramid design	New design
Physics Preference		CFD	CFD
Solver Preference		Fluent	Fluent
Relevance		100	100
Sizing	Use Advanced Size Function	Curvature	Curvature
	Relevance Center	Fine	Fine
	Smoothing	High	High
	Transition	Slow	Slow
	Span Angle Center	Fine	Fine
	Curvature Normal Angle	Default	Default
	Min Size	1.6706e-004 m	1.6706e-004 m
	Max Face Size	4.0 mm	4.0 mm
	Max Size	4.e−002 m	4.e−002 m
	Growth Rate	Default(1.1) mm	Default(1.1) mm
	Minimum Edge Length	30.0 mm	30.0 mm
Nodes		318935	210150
Elements		1446419	1108350
Mesh Controls	Scoping Method	Geometry Selection	Geometry Selection
	Method	MultiZone	MultiZone
	Mapped Mesh Type	quadrilateral	quadrilateral
	Scoping Method	Geometry Selection	Geometry Selection
	Free Face Mesh Type	Tetra/pyramid	Tetra/pyramid