Abstract This study presents results from a model intercomparison project, focusing on the range of responses in deep convective cloud updrafts to varying condensation nuclei (CCN) concentrations among seven state-of-the-art cloud-resolving models. Simulations scattered clouds near Houston, Texas, are conducted, after being initialized with both relatively low and high CCN concentrations. Deep ...

Three ground-based radars in the Pearl River Delta successfully observed Typhoon Higos (2020), which traveled over offshore area South China Sea. During observation period, stratiform region of outer rainband HIGOS became active while swirling inward, merging into an unclosed eyewall and spreading outward, but its structure was asymmetric between upwind downwind. To understand dynamic mechanism...

Abstract The lack of consensus as to how entrainment and detrainment must be represented in convection parameterizations highlights the need for in-depth investigations processes driving lateral mixing clouds. Direct estimates rates are here obtained from high-resolution simulations shallow cumulus using a method that isolates contributions various competing processes. Moreover, cloud-averaged ...

A perturbation of relative humidity is used as a trigger to start the convection in a two-dimensional numerical model of a cumulus cloud. The effects of varying the width and depth of the perturbation are studied. The rate of growth; eventual cloud height, liquid water content, and updraft strength are strongly dependent on depth of the impulse; but for realistically shallow depths, these value...

In this paper, capture efficiency of range hoods is measured for boiling water and non-boiling salad oil at 100℃ . The influence difference in thermal updraft over a pot with without the same temperature on discussed. Analytical conditions CFD using RANS to consider effect are studied.

Soot is an aerosol formed by incomplete combustion of carbonaceous materials, and its formation in biomass gasification inevitable. It crucial to know the properties soot produced exhaust reactors order appreciate both advantages disadvantages. In this study, a variety analytical techniques were used examine content morphology top-lit updraft gasifier. The results experiment revealed that carbo...

By using products of the cloud model, National Centers for Environmental Prediction (NCEP) Final Operational Global Analysis (FNL) reanalysis data, and Doppler weather radar mesoscale characteristics, microphysical structure, mechanism two hail systems which occurred successively within 24 h in southeastern Yunnan have been analyzed. The results show that under influence southwest jets front so...

Flash ironmaking technology (FIT) is a potential alternative process reducing energy consumption and environmental pollution. The newly proposed counter-current flash has more reasonable temperature concentration distribution, while the high dust rate cannot be avoided. In this study, swirling configuration was introduced to improve control performance. A comprehensive computational fluid dynam...