Effect of density variation method and air humidity consideration on the computational simulation of solar vortex power generation systems

Surface acoustic wave sensing chip based on acoustic impedance effect: a method for rapid gas leakage detection and respiratory monitoring

“…Formula (2) gives the relationship between mixed gas velocity V mix and gas constant R, temperature T, the adiabatic γ mix and the equivalent molar mass M mix , where γ mix and M mix is expressed in formula (3)(4), M 0 and M g are molar masses of the background gas and the measured gas respectively. For air with different humidity, its density and velocity are as follows (5-6) 34,35 :…”

Evaluation of photovoltaic-based solar chimney–assisted stack ventilation within a large space hall: A case study

“…The incompressible ideal gas law was employed to obtain a functional relationship between the air density and the air temperature. 30 The discrete ordinate (DO) radiation model was used to calculate the radiative heat transfer in the hall. Although the implicit Euler scheme was used for the transient term, the boundary conditions remained unchanged in each specific simulation case.…”

The influence of relative humidity and emission source location on the migration regularity of bioaerosols in a typical urban environment

“…研究所采用的湍流模型、组分输运模型和离散相 模型通过汉堡大学气象研究所的风洞实验进行了验 证 [21] [27] , 导致行人高度的流场减弱. 此外, RH增加导致空气中的水蒸气量增加, 进而使空气的气 压降低, 导致流场减弱.…”

“…综上所述, 现有研究主要集中于边界气象条件、 建筑布局和截面形状以及城市热岛等因素对生物气溶 胶迁移规律的影响, 然而相对湿度(relative humidity, RH)对城市生物气溶胶迁移规律影响的研究却较少. 城 市环境下RH对气溶胶的扩散模式起着重要作用, RH是 城市气象条件中的关键参数, RH变化可能改变空气的 密度和流动性 [27] , 影响城市空气流场在水平与垂直方 向的分布规律, 进而影响生物气溶胶的迁移 [28,29] . 另外, 现有研究表明生物气溶胶的释放位置可能会显著影响 气溶胶的传播规律 [30,31] .…”