Search | Engineering

Subscribe Submit

Home Journals Focus Achievement Fronts About Us 中文版

Resource Type

Journal Article 2

Year

2017 1

2009 1

Keywords

Big data 1

China Microbiome Initiative 1

Methoddevelopment 1

Microbiome 1

Single-cell analysis 1

axial-type fan 1

design variable 1

free-vortex method 1

gradient method 1

operating flowrate 1

static pressure 1

total pressure 1

open ︾

Search scope:

排序： Display mode:

Development of an axial-type fan with an optimization method

Chong-hyun CHO, Soo-yong CHO, Chaesil KIM,

Frontiers in Energy 2009, Volume 3, Issue 4, Pages 414-422 doi: 10.1007/s11708-009-0038-5

Abstract: An axial-type fan that operates at a relative total pressure of 671Pa and a static pressure of 560Pa with a flowrate of 416.6m/min is developed using an optimization technique based on the gradient method. Prior to the optimization of the fan blade, a three-dimensional axial-type fan blade is designed based on the free-vortex method along the radial direction. Twelve design variables are applied to the optimization of the rotor blade, and one design variable is selected for optimizing a stator which is located behind the rotor to support a fan-driving motor. The total and static pressure are applied to the restriction condition with the operating flowrate on the design point, and the efficiency is chosen as the response variable to be maximized. Through these procedures, an initial axial-fan blade designed by the free vortex method is modified to increase the efficiency with a satisfactory operating condition. The optimized fan is tested and compared with the performance obtained with the same class fan to figure out the optimization effect. The test results show that the optimized fan not only satisfies the restriction conditions but also operates at the same efficiency even though the tip clearance of the optimized fan is greater than 30%. The experimental and numerical tests show that this optimization method can improve the efficiency and operating pressures on axial-type fans.

Keywords： axial-type fan gradient method free-vortex method design variable total pressure static pressure operating flowrate

HTML PDF Collect

Emerging Trends for Microbiome Analysis: From Single-Cell Functional Imaging to Microbiome Big Data

Jian Xu, Bo Ma, Xiaoquan Su, Shi Huang, Xin Xu, Xuedong Zhou, Wei Huang, Rob Knight

Engineering 2017, Volume 3, Issue 1, Pages 66-70 doi: 10.1016/J.ENG.2017.01.020

Abstract:

Method development has always been and will continue to be a core driving force of microbiome science. In this perspective, we argue that in the next decade, method development in microbiome analysis will be driven by three key changes in both ways of thinking and technological platforms: ① a shift from dissecting microbiota structureby sequencing to tracking microbiota state, function, and intercellular interaction via imaging; ② a shift from interrogating a consortium or population of cells to probing individual cells; and ③ a shift from microbiome data analysis to microbiome data science. Some of the recent method-development efforts by Chinese microbiome scientists and their international collaborators that underlie these technological trends are highlighted here. It is our belief that the China Microbiome Initiative has the opportunity to deliver outstanding “Made-in-China” tools to the international research community, by building an ambitious, competitive, and collaborative program at the forefront of method development for microbiome science.

Keywords： Microbiome Methoddevelopment Single-cell analysis Big data China Microbiome Initiative