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Article
Simulation of micro-behaviors including nucleation, growth, and aggregation in particle system
A new method for the solution of population balance equations (PBE) describing the micro-processes such as nucleation, growth, aggregation of particle swarms in a multiphase system is proposed. The method is b...
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Article
Solution of N-S equations based on the quadtree cut cell method
With the characteristic of the quadtree data structure, a new mesh generation method, which adopts square meshes to decompose a background domain and a cut cell approach to express arbitrary boundaries, is pro...
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Article
Applications of membrane distillation technology in energy transformation process-basis and prospect
Membrane distillation technology is a new type of efficient separation technology that combines traditional distillation technology and membrane separation technology. In the study, applications of membrane di...
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Article
Advances in numerical methods for the solution of population balance equations for disperse phase systems
Accurate prediction of the evolution of particle size distribution is critical to determining the dynamic flow structure of a disperse phase system. A population balance equation (PBE), a non-linear hyperbolic...
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Article
Large eddy simulation of flow in a street canyon with tree planting under various atmospheric instability conditions
In this work, a large eddy simulation (LES) model, which includes momentum and heat source (or sink) inside the tree planting layer, is proposed for the simulation of flow in a street canyon with tree planting...
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Article
Technical measures to achieve a cleaner production mode for recycled paper mills
China’s paper production reached 79.8 × 106 t in 2008 and ranked number one in the world. Because of its high consumption of water, energy and materials and its serious pollution, the present processes are not li...
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Article
Open AccessMethods for large reciprocating compressor capacity control: A review based on pulse signal concept
Large reciprocating compressors are important equipment used in a wide range of process industries. Most of these compressors have huge power requirements and their capacity often needs to be regulated. Advanc...
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Article
Study of Y zeolite catalysts for coal tar hydro-cracking in supercritical gasoline
For coal tar hydrocracking process in supercritical gasoline, it requires a new catalyst with high activity under low temperature conditions to improve the light oil yield. The effects of Mo–Co–Y and Mo–Ni–Y s...
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Article
Open AccessThe role of water content in triboelectric charging of wind-blown sand
Triboelectric charging is common in desert sandstorms and dust devils on Earth; however, it remains poorly understood. Here we show a charging mechanism of sands with the adsorbed water on micro-porous surface...
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Article
Air quality by urban design
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Article
Kinetic model of low temperature coal tar hydrocracking in supercritical gasoline for reducing coke production
To reduce coke production during low temperature coal tar hydrocracking in supercritical gasoline, a lump kinetic model was derived on the basis of catalytic cracking reaction mechanism. Lumps were defined by ...
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Article
Open AccessFrom Dust Devil to Sustainable Swirling Wind Energy
Dust devils are common but meteorologically unique phenomena on Earth and on Mars. The phenomenon produces a vertical vortex motion in the atmosphere boundary layer and often occurs in hot desert regions, espe...
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Article
An Efficient RIGID Algorithm and Its Application to the Simulation of Particle Transport in Porous Medium
RIGID algorithm was recently proposed to identify the contact state between spherical particles and arbitrary-shaped walls, demonstrating significantly improved robustness, accuracy and efficiency compared to ...
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Article
Dust Devil Steady-State Structure from a Fluid Dynamics Perspective
Simple analytical models for the flow structure of dust devils in steady state, and a “thermophysical” scaling theory that explains how these flow structures are maintained are reviewed. Then, results from hig...
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Article
Open AccessHistory and Applications of Dust Devil Studies
Studies of dust devils, and their impact on society, are reviewed. Dust devils have been noted since antiquity, and have been documented in many countries, as well as on the planet Mars. As time-variable vorte...
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Article
Large-Eddy Simulations of Dust Devils and Convective Vortices
In this review, we address the use of numerical computations called Large-Eddy Simulations (LES) to study dust devils, and the more general class of atmospheric phenomena they belong to (convective vortices). ...
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Article
Open AccessExamining the physical and chemical contributions to size spectrum evolution during the development of hazes
China has experienced severe hazes with high concentrations of particulate matter in recent years. The understanding of the size spectrum evolution of submicron particulate matter is critical to making efficie...
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Article
Experimental Study on Hybrid Organic Phase Change Materials Used for Solar Energy Storage
The solar energy utilization in built environment has been limited due to its low heat flux, uneven distribution in time and space and temporal difference in day and night. The phase change materials have been...
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Article
Impact Factors on Airflow and Pollutant Dispersion in Urban Street Canyons and Comprehensive Simulations: a Review
The air quality management within urban street canyons can be improved by enhancing ventilation for dispersion of pollutants. The purpose of this review is to summarize effects of various impact factors on air...
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Article
Experimentation of a Membrane-based Concentration Gradient Energy Storage of Liquid Desiccant Solutions Driven by Solar Energy
Solar energy storage is an indispensable and sustainable utilization mode of renewable energy; environment friendly, large-capacity, low heat loss, and long-term storage are critical to improving the integrati...
