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Chunlong LIU, Qunyi ZHU, Zhengqi LI, Qiudong ZONG, Xiang ZHANG, Zhichao CHEN
《能源前沿(英文)》 2013年 第7卷 第3期 页码 406-412 doi: 10.1007/s11708-013-0266-6
LIU Yiping, YANG Weilin, WANG Jing
《能源前沿(英文)》 2008年 第2卷 第2期 页码 152-157 doi: 10.1007/s11708-008-0012-7
关键词: two-phase Superficial reasonable prediction one-dimensional gas-liquid
Influence of boundary conditions and turntable speeds on the stability of hydrostatic oil cavity
Zhaomiao LIU, Chengyin ZHANG, Feng SHEN
《机械工程前沿(英文)》 2011年 第6卷 第3期 页码 359-368 doi: 10.1007/s11465-011-0222-2
The flow, bearing, and carrying capacity of the cycloidal hydrostatic oil cavity in hydrostatic turntable systems are numerically simulated, considering the rotation speeds of a turntable from 0 to 5 m/s and different boundary conditions. The vortex effect is weakened, and the stability of the oil cavity is enhanced with the increase in lubricant viscosity. However, the increase in inlet speed, depth, and inlet radius of the oil cavity causes the vortex effect to increase and the stability of oil cavity to reduce. With the increase in the oil film thickness, the carrying capacity of the oil cavity diminishes. The oil cavity pressure increases along the direction of the motion of the turntable; it is distributed unevenly because of the rotation of the turntable. With the increase in turntable speed, the location and size of the vortex scope in the oil cavity flow field and the strength of the vortex near the entrance gradually weaken and move away from the entry. The distribution of pressure is determined by the locations of the vortex. When the vortex is close to the wall, the wall pressure increases at its location. Otherwise, the wall pressure decreases first and then increases after the center of the vortex.
关键词: hydrostatic oil cavity flow state oil cavity pressure stability vortex
Shuai MA, Siyu ZENG, Xin DONG, Jining CHEN, Gustaf OLSSON
《环境科学与工程前沿(英文)》 2014年 第8卷 第1期 页码 128-136 doi: 10.1007/s11783-013-0598-9
关键词: influent load prediction wavelet de-noising power spectrum density autoregressive model time-frequency analysis wastewater treatment
李莉,苗青,佟文强,宋飞,徐海红,梁静华
《中国工程科学》 2010年 第12卷 第2期 页码 47-51
流动保障技术是通过综合研究影响油气管道流动安全各主要相关因素对所输介质流动特性的影响规律,进而提出保障和预防措施来实现油气管道的安全运行。对油气管道流动保障技术的历史、现状和未来趋势进行了论述,明确了所包含的原油流变学及其应用研究、油(气)管道流动改进剂研究与应用研究和多种油品顺序输送流动特性研究等三项主要研究内容,提出了这一研究领域的重点发展方向。
Mechanism and control factors of hydrate plugging in multiphase liquid-rich pipeline flow systems: a
Shuwei ZHANG, Liyan SHANG, Zhen PAN, Li ZHOU, You GUO
《能源前沿(英文)》 2022年 第16卷 第5期 页码 747-773 doi: 10.1007/s11708-022-0830-z
关键词: hydrate flow rate water content mechanism of pipeline blockage rich liquid phase system
Experimental investigation on oil-gas separator of air-conditioning systems
Dianbo XIN,Shuliang HUANG,Song YIN,Yuping DENG,Wenqiang ZHANG
《能源前沿(英文)》 2019年 第13卷 第2期 页码 411-416 doi: 10.1007/s11708-017-0447-9
关键词: variable refrigerant flow system oil-gas separator separation efficiency
Elliptical lobe shape gerotor pump design to minimize wear
Mohammad Reza KARAMOOZ RAVARI
《机械工程前沿(英文)》 2011年 第6卷 第4期 页码 429-434 doi: 10.1007/s11465-011-0247-6
The gerotor pumps are the most important parts of mechanical equipment that have a vast number of applications in industries and automobiles. Because the gerotor pumps cannot be adjusted for wear so it is important to reduce the wear as much as possible. In this paper first mathematical equations for elliptical lobe shape rotors profile and curvature of them have been derived and then Specific flow and wear rate proportional factor (WRPF) have been formulated. To reach the minimum wear in rotors teeth, the ellipse shape factor is changed for each value of number of outer rotor teeth in a feasible range and wear rate proportional factor has been resulted. Also in order to have better comparison specific flow has been presented. The obtained results have been compared with circular pumps with similar geometrical parameters and show the significant improvement in wear of the rotors with negligible changes in the specific flow.
关键词: gerotor pump elliptical lobe shape pump wear rate proportional factor (WRPF) specific flow
Factors influencing water quality indices in a typical urban river originated with reclaimed water
Jiao Zhang, Zhen Wei, Haifeng Jia, Xia Huang
《环境科学与工程前沿(英文)》 2017年 第11卷 第4期 doi: 10.1007/s11783-017-0943-5
R. LALITHA NARAYANA, V. RAMACHANDRA RAJU
《能源前沿(英文)》 2020年 第14卷 第1期 页码 105-113 doi: 10.1007/s11708-018-0536-4
关键词: distillation efficiency solar still heat transfer coefficient water depth optimum and mass flow rate
Experimental study of heat transfer coefficient with rectangular baffle fin of solar air heater
Foued CHABANE,Nesrine HATRAF,Noureddine MOUMMI
《能源前沿(英文)》 2014年 第8卷 第2期 页码 160-172 doi: 10.1007/s11708-014-0321-y
关键词: Nusselt number flow rate heat transfer heat transfer coefficient thermal efficiency forced convection
张青松,刘茂,赵国敏
《中国工程科学》 2007年 第9卷 第4期 页码 64-69
基于人群流动理论和离散计算方法对传统疏散时间计算公式进行了改进,并提出了疏散离散时间计 算模型(EDTM)。运用此改进模型对天津奥林匹克中心体育场某看台出口人群疏散时间计算,并与 BuildingEXODUS计算机模拟、传统公式计算结果对比分析表明,此改进模型计算结果与计算机模拟结果非常接 近,且比传统疏散时间计算公式更为精确和符合实际情况,可代替传统疏散时间计算公式用于体育赛场尤其是 北京奥运赛场人群疏散时间计算及进行赛场性能化设计的依据。
Effects of process parameters on surface roughness in abrasive waterjet cutting of aluminium
M. CHITHIRAI PON SELVAN, N. MOHANA SUNDARA RAJU, H. K. SACHIDANANDA
《机械工程前沿(英文)》 2012年 第7卷 第4期 页码 439-444 doi: 10.1007/s11465-012-0337-0
Abrasive waterjet cutting is a novel machining process capable of processing wide range of hard-to-cut materials. Surface roughness of machined parts is one of the major machining characteristics that play an important role in determining the quality of engineering components. This paper shows the influence of process parameters on surface roughness (Ra) which is an important cutting performance measure in abrasive waterjet cutting of aluminium. Taguchi’s design of experiments was carried out in order to collect surface roughness values. Experiments were conducted in varying water pressure, nozzle traverse speed, abrasive mass flow rate and standoff distance for cutting aluminium using abrasive waterjet cutting process. The effects of these parameters on surface roughness have been studied based on the experimental results.
关键词: abrasive waterjet aluminium garnet water pressure mass flow rate traverse speed standoff distance
《环境科学与工程前沿(英文)》 2021年 第15卷 第6期 doi: 10.1007/s11783-021-1411-9
• Actual SAORs was determined using MLVSS and temperature.
关键词: Specific ammonia oxidation rate Sequencing batch reactor Biomass Temperature coefficient Model simulation
标题 作者 时间 类型 操作
Influence of different oil feed rate on bituminous coal ignition in a full-scale tiny-oil ignition burner
Chunlong LIU, Qunyi ZHU, Zhengqi LI, Qiudong ZONG, Xiang ZHANG, Zhichao CHEN
期刊论文
Experimental study for the stratified to slug flow regime transition mechanism of gas-oil two-phase flow
LIU Yiping, YANG Weilin, WANG Jing
期刊论文
Influence of boundary conditions and turntable speeds on the stability of hydrostatic oil cavity
Zhaomiao LIU, Chengyin ZHANG, Feng SHEN
期刊论文
Short-term prediction of influent flow rate and ammonia concentration in municipal wastewater treatment
Shuai MA, Siyu ZENG, Xin DONG, Jining CHEN, Gustaf OLSSON
期刊论文
Mechanism and control factors of hydrate plugging in multiphase liquid-rich pipeline flow systems: a
Shuwei ZHANG, Liyan SHANG, Zhen PAN, Li ZHOU, You GUO
期刊论文
Experimental investigation on oil-gas separator of air-conditioning systems
Dianbo XIN,Shuliang HUANG,Song YIN,Yuping DENG,Wenqiang ZHANG
期刊论文
Factors influencing water quality indices in a typical urban river originated with reclaimed water
Jiao Zhang, Zhen Wei, Haifeng Jia, Xia Huang
期刊论文
Experimental study on performance of passive and active solar stills in Indian coastal climatic condition
R. LALITHA NARAYANA, V. RAMACHANDRA RAJU
期刊论文
Experimental study of heat transfer coefficient with rectangular baffle fin of solar air heater
Foued CHABANE,Nesrine HATRAF,Noureddine MOUMMI
期刊论文
Effects of process parameters on surface roughness in abrasive waterjet cutting of aluminium
M. CHITHIRAI PON SELVAN, N. MOHANA SUNDARA RAJU, H. K. SACHIDANANDA
期刊论文