Numerical investigation of particles’ transport, deposition and resuspension under unsteady conditions in constructed stormwater ponds

Environmental Sciences Europe

Table 3 DPM setup and different bed boundary conditions for the developed approach

Case	Process A: settling	Process B: resuspension	Total particles	Rebound coefficient	Initial resuspended velocity u_i,v_i	DRWM C_L
DPM 1	VBSS	VBSS	22,400	e = 1, f = 1	Equations (15)–(16)	0.15
DPM 2	VBSS	VBSS	44,800	e = 1, f = 1	Equations (15)–(16)	0.15
DPM 3	VBSS	VBSS	67,200	e = 1, f = 1	Equations (15)–(16)	0.15
DPM 4	VBSS	VBSS	89,600	e = 1, f = 1	Equations (15)–(16)	0.15
DPM 5	VBSS	VBSS	100,800	e = 1, f = 1	Equations (15)–(16)	0.15
DPM 6	VBSS	VBSS	44,800	e = 1, f = 1	Equations (15)–(16)	0.05
DPM 7	VBSS	VBSS	44,800	e = 1, f = 1	Equations (15)–(16)	0.25
DPM 8	VBSS	VBSS	44,800	e = 1, f = 1	Equations (15)–(16)	0.5
DPM 9	VBSS	VBSS	44,800	e = 1, f = 1	Equations (15)–(16)	–
DPM 10	VBSS	VBSS	44,800	e = 0.84−4.84τ_*, f = 0.73	Equations (15)–(16)	0.05
DPM 11	VBSS	VBSS	44,800	e = 0.84−4.84τ_*, f = 0.73	Equations (15)–(16)	0.1
DPM 12	VBSS	No consideration	44,800	e = 1, f = 1	–	0.05

DPM discrete phase model, VBSS varying bed shear stress, DRWM discrete random walk model