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Influence of nozzle height to width ratio on ignition and NO

Liutao SUN, Yonghong YAN, Rui SUN, Zhengkang PENG, Chunli XING, Jiangquan WU

Frontiers in Energy 2021, Volume 15, Issue 2,   Pages 431-448 doi: 10.1007/s11708-021-0726-3

Abstract: (PF) of semicoke (SC), large-scale experiments were conducted in a 300 kW fired furnace at various nozzlesettings, i.e., ratios (denoted by / ) of the height of the rectangular burner nozzle to its widthThe combustion tests indicate that the flame stability, ignition performance, and fuel burnout ratiowere significantly improved at a nozzle setting of / = 2.32.Furthermore, the ratio (denoted by / ) of the strong reduction zone area to the combustion reaction

Keywords： rectangular jet burner     nozzle height to width ratio     ignition characteristics     pyrolyzed semicoke (SC)    

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Piezoelectric diffuser/nozzle micropump with double pump chambers

WANG Wei, ZHANG Ying, TIAN Li, CHEN Xiaojie, LIU Xiaowei

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 4,   Pages 449-453 doi: 10.1007/s11465-008-0076-4

Abstract: To eliminate check valve fatigue and valve clogging, diffuser/nozzle elements are used for flow rectificationin a valveless diffuser/nozzle micropump instead of valves.In this paper, a diffuser/nozzle Si/Glass micropump with two pump chambers by IC and MEMS technology

Keywords： diffuser/nozzle Si/Glass     phenomenon     rectification     diffuser/nozzle micropump     frequency    

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Experimental and CFD analysis of nozzle position of subsonic ejector

Xilai ZHANG, Shiping JIN, Suyi HUANG, Guoqing TIAN

Frontiers in Energy 2009, Volume 3, Issue 2,   Pages 167-174 doi: 10.1007/s11708-009-0001-5

Abstract: The influence of nozzle position on the performance of an ejector was analyzed qualitatively with freeExperimental investigations and computational fluid dynamics (CFD) analysis of the nozzle position ofThe results show that there is an optimum nozzle position for the ejector.The ejecting coefficient reaches its maximum when the nozzle is positioned at the optimum and decreasesMoreover, the nozzle position of an ejector is not a fixed value, but is influenced greatly by the flow

Keywords： ejector     nozzle position     ejecting coefficient     CFD    

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Yield-height correlation and QTL localization for plant height in two lowland switchgrass populations

Shiva O. MAKAJU, Yanqi WU, Michael P. ANDERSON, Vijaya G. KAKANI, Michael W. SMITH, Linglong LIU, Hongxu DONG, Dan CHANG

Frontiers of Agricultural Science and Engineering 2018, Volume 5, Issue 1,   Pages 118-128 doi: 10.15302/J-FASE-2018201

Abstract: Plant height is a major component contributing to biomass yield.Accordingly, the objectives of this research were to analyze phenotypic variation for biomass and plant heightand the association between them and to localize associated plant height QTLs.Large genetic variation existed for plant biomass and height within the two populations.Plant height was positively correlated with biomass yield in the selfed population ( = 0.39, <0.0001

Keywords： yield-height     QTL localization     lowland switchgrass    

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Depth of cut models for multipass abrasive waterjet cutting of alumina ceramics with nozzle oscillation

Jun WANG

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 1,   Pages 19-32 doi: 10.1007/s11465-009-0082-1

Abstract: of the depth of cut in multipass abrasive waterjet (AWJ) cutting of alumina ceramics with controlled nozzlesignificantly increase the depth of cut by an average of 50.8% as compared to single pass cutting without nozzle

Keywords： abrasive waterjet     engineering ceramics     depth of cut     cutting performance     nozzle oscillation     machining    

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Calculation methods of the crack width and deformation for concrete beams with high-strength steel bars

Jianmin ZHOU, Shuo CHEN, Yang CHEN

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 3,   Pages 316-324 doi: 10.1007/s11709-013-0211-0

Abstract: Three groups of concrete beams reinforced with high-strength steel bars were tested, and the crack width

Keywords： concrete beam     high-strength steel bar     crack width     deformation    

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Numerical analysis of rotating stall characteristics in vaneless diffuser with large width-radius ratio

GAO Chuang, GU Chuangang, WANG Tong, DAI Zhengyuan

Frontiers in Energy 2008, Volume 2, Issue 4,   Pages 457-460 doi: 10.1007/s11708-008-0071-9

Abstract: jet-wake velocity patterns are prescribed, was applied to simulate one vaneless diffuser with a large width-radiusratio.Computational results show that a different mechanism does exist for diffusers with large width-radius

Keywords： Comparison     Computational     two-dimensional     influence     different mechanism    

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Hydraulic Pressure Extremes Ratio & Extremes Ratio Efficiencies

Qi Maolin

Strategic Study of CAE 2001, Volume 3, Issue 4,   Pages 73-75

Abstract: applies basic formula to the calculation of a relationship between the hydraulic pressure extremes ratioof hydraulic system and the extremes ratio efficiencies.This relationship shows that the greater the hydraulic pressure extremes ratio is, the lower the extremesratio efficiencies are.The article holds that the hydraulic pressure extremes ratio can be designed and chosen.

Keywords： hydraulic pressure extremes ratio     extremes ratio efficiencies     hydraulic system    

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Method of Evaluating the Design of Evacuation Based on the Using Rate of Unit Effective Evacuation Width

Yang Jianpeng,Zhang Heping,Pan Zheng,Ma Ning,Jiang Weicheng

Strategic Study of CAE 2006, Volume 8, Issue 5,   Pages 94-97

Abstract: This paper advances a method which uses the using rate of unit effective evacuation width as the major

Keywords： fire     evacuation     the using rate of unit effective evacuation width    

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Controlling interstory drift ratio profiles via topology optimization strategies

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 2,   Pages 165-178 doi: 10.1007/s11709-022-0892-3

Abstract: An approach to control the profiles of interstory drift ratios along the height of building structuresproposed approach involves solving a min–max optimization problem to suppress the maximum interstory drift ratioThe proposed methodology can shape the interstory drift ratio profiles into inverted triangular or quadratic

Keywords： interstory drift ratio     aggregation function     bound formulation     min–max problem     topology optimization    

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Numerical analysis of nonlinear dynamic behavior of earth dams

Babak EBRAHIMIAN

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 1,   Pages 24-40 doi: 10.1007/s11709-010-0082-6

Abstract: Afterwards, a comprehensive parametric study is carried out to identify the effects of dam height, inputThe results show that the crest acceleration decreases when the dam height increases and no amplification

Keywords： earth dam     numerical     nonlinear response     dynamic analysis     earthquake     dam height    

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Insult of gastroesophageal reflux on airway: clinical significance of pharyngeal nozzle

Zhonggao Wang,Zhiwei Hu,Jimin Wu,Feng Ji,Hongtao Wang,Yungang Lai,Xiang Gao,Yachan Ning,Chengchao Zhang,Zhitong Li,Weitao Liang,Jianjun Liu

Frontiers of Medicine 2015, Volume 9, Issue 1,   Pages 117-122 doi: 10.1007/s11684-014-0343-1

Abstract: passes the esophagus and then the distal pharynx, where it appears a beak like stricture, serving as a nozzle

Keywords： gastroesophageal reflux     airway     pharyngeal nozzle     micro-aspiration     asthma    

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A methodology of implementing target mixing ratio for asphalt mixture

Yucheng HUANG, Lun JI, Rui WEN, Ming ZHANG

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 3,   Pages 308-314 doi: 10.1007/s11709-017-0405-y

Abstract: of hot mix asphalt adequately during the construction process, the significance of objective mixing ratioThe results show that the set of methods can not only implement the objective mixing ratio of hot mix

Keywords： asphalt mixture     target mixing ratio     mix design implementation     batching & mixing plant debugging    

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Diagnostic evaluation of plasma aldosterone concentration to plasma renin activity ratio in primary aldosteronism

ZHANG Huilan, WANG Daowen

Frontiers of Medicine 2008, Volume 2, Issue 1,   Pages 11-14 doi: 10.1007/s11684-008-0003-4

Abstract: Using the plasma aldosterone concentration to plasma renin activity ratio (PAC/PRA ratio) as the screeninghypertensive patients, we studied the clinical characteristics and the diagnostic value of PAC/PRA ratioOne hundred and twenty-six suspected primary aldosteronism patients whose PAC/PRA ratio was > 25 ng/dLThe PAC/PRA ratio can be considered as a routine screening test in hypertensives, especially resistanthypertensive patients and a high PAC/PRA ratio is an invaluable index in primary aldosteronism diagnosis
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Target height and multipath attenuation joint estimation with complex scenarios for very high frequency Research Articles

Sheng CHEN, Yongbo ZHAO, Yili HU, Chenghu CAO, Xiaojiao PANG

Frontiers of Information Technology & Electronic Engineering 2022, Volume 23, Issue 6,   Pages 937-949 doi: 10.1631/FITEE.2100003

Abstract: To deal with this problem, we propose an algorithm of target height and multipath attenuation joint estimation

Keywords： Low-angle estimation     Very high frequency (VHF) radar     Complex scenarios     Multipath effect     Height estimation    

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Title Author Date Type Operation

Influence of nozzle height to width ratio on ignition and NO

Liutao SUN, Yonghong YAN, Rui SUN, Zhengkang PENG, Chunli XING, Jiangquan WU

Journal Article

Piezoelectric diffuser/nozzle micropump with double pump chambers

WANG Wei, ZHANG Ying, TIAN Li, CHEN Xiaojie, LIU Xiaowei

Journal Article

Experimental and CFD analysis of nozzle position of subsonic ejector

Xilai ZHANG, Shiping JIN, Suyi HUANG, Guoqing TIAN

Journal Article

Yield-height correlation and QTL localization for plant height in two lowland switchgrass populations

Shiva O. MAKAJU, Yanqi WU, Michael P. ANDERSON, Vijaya G. KAKANI, Michael W. SMITH, Linglong LIU, Hongxu DONG, Dan CHANG

Journal Article

Depth of cut models for multipass abrasive waterjet cutting of alumina ceramics with nozzle oscillation

Jun WANG

Journal Article

Calculation methods of the crack width and deformation for concrete beams with high-strength steel bars

Jianmin ZHOU, Shuo CHEN, Yang CHEN

Journal Article

Numerical analysis of rotating stall characteristics in vaneless diffuser with large width-radius ratio

GAO Chuang, GU Chuangang, WANG Tong, DAI Zhengyuan

Journal Article

Hydraulic Pressure Extremes Ratio & Extremes Ratio Efficiencies

Qi Maolin

Journal Article

Method of Evaluating the Design of Evacuation Based on the Using Rate of Unit Effective Evacuation Width

Yang Jianpeng,Zhang Heping,Pan Zheng,Ma Ning,Jiang Weicheng

Journal Article

Controlling interstory drift ratio profiles via topology optimization strategies

Journal Article

Numerical analysis of nonlinear dynamic behavior of earth dams

Babak EBRAHIMIAN

Journal Article

Insult of gastroesophageal reflux on airway: clinical significance of pharyngeal nozzle

Zhonggao Wang,Zhiwei Hu,Jimin Wu,Feng Ji,Hongtao Wang,Yungang Lai,Xiang Gao,Yachan Ning,Chengchao Zhang,Zhitong Li,Weitao Liang,Jianjun Liu

Journal Article

A methodology of implementing target mixing ratio for asphalt mixture

Yucheng HUANG, Lun JI, Rui WEN, Ming ZHANG

Journal Article

Diagnostic evaluation of plasma aldosterone concentration to plasma renin activity ratio in primary aldosteronism

ZHANG Huilan, WANG Daowen

Journal Article

Target height and multipath attenuation joint estimation with complex scenarios for very high frequency

Sheng CHEN, Yongbo ZHAO, Yili HU, Chenghu CAO, Xiaojiao PANG

Journal Article