Effects of human walking on the capture efficiency of range hood in residential kitchen

Using CONTAM to design ventilation strategy of negative pressure isolation ward considering different height of door gaps

“…Computational fluid dynamics (CFD), another commonly used tool for fluid analysis, is a powerful and widely used technique for analysing the various physical phenomena of complex gas flows. The reliability and accuracy of CFD have been verified in the analysis of indoor environments prone to produce pollution, such as hospitals[ 19 , 24 , 30 ], kitchens[ 31 , 32 ] and laboratories[ 33 , 34 ]. Due to the large number of rooms in the building and the intricate forms, CFD requires a huge amount of computing resources and takes a long time to calculate.…”

Dynamics and Numerical Simulation of Contaminant Diffusion for a Non-Flushing Ecological Toilet

“…For the simulations, the component transport model was adopted for the contaminant inlet. The standard, RNG, realizable, and low-Re k-ε models were used to simulate the gas turbulence [28,[41][42][43][44]. These models consider the natural buoyancy-driven convection during the diffusion process and use the finite volume method and pressure-velocity coupling format of the SIMPLEC algorithm to obtain the discrete solution of the control equation.…”

Aerosol exchange between pressure-equilibrium rooms induced by door motion and human movement

“…Although several studies on the roles of building ventilation and airflow organisation in transmitting airborne diseases have emerged since the beginning of the COVID-19 pandemic [ [4] , [5] , [6] ], most studies have adopted a steady-state assumption that ignores indoor dynamic events such as the opening and closing of doors and windows, and the movement of building occupants and equipment. In fact, these dynamic events may significantly change the airflow and aerosol distribution patterns especially when they are high-frequency occurrences and in low-ventilation spaces such as residential and office buildings [ 7 , 8 ].…”