Applications of Nanofluids: Current and Future Tập 2 - Trang 519659 - 2010
Kaufui V. Wong, Omar De Leon
Nanofluids are suspensions of nanoparticles in fluids that show significant
enhancement of their properties at modest nanoparticle concentrations. Many of
the publications on nanofluids are about understanding their behavior so that
they can be utilized where straight heat transfer enhancement is paramount as in
many industrial applications, nuclear reactors, transportation, electronics as
well as... hiện toàn bộ
Experimental Investigations on the Effects of Cerium Oxide Nanoparticle Fuel Additives on Biodiesel Tập 2 - Trang 581407 - 2010
V. Sajith, C. B. Sobhan, G. P. Peterson
This paper reports the results of experimental investigations on the influence
of the addition of cerium oxide in the nanoparticle form on the major
physicochemical properties and the performance of biodiesel. The physicochemical
properties of the base fuel and the modified fuel formed by dispersing the
catalyst nanoparticles by ultrasonic agitation are measured using ASTM standard
test methods. T... hiện toàn bộ
Tổng quan về việc tích hợp các cấu trúc lưới gradient nhẹ trong các bộ phận sản xuất theo công nghệ đắp dần Dịch bởi AI Tập 12 Số 6 - Trang 168781402091695 - 2020
Asliah Seharing, Abdul Hadi Azman, Shahrum Abdullah
Bài tổng quan này phân tích thiết kế, hành vi cơ học, khả năng sản xuất, và ứng
dụng của các cấu trúc lưới gradient được sản xuất bằng công nghệ đắp dần kim
loại. Bằng cách thay đổi các tham số thiết kế như kích thước ô, chiều dài thanh,
và đường kính thanh của các ô đơn vị trong cấu trúc lưới, một thuộc tính
gradient được hình thành để đạt được các mức độ chức năng khác nhau và tối ưu
hóa tỷ lệ g... hiện toàn bộ
#lattice structures #additive manufacturing #gradient properties #mechanical behavior #design optimization #metallic technology #design freedom #manufacturing constraints
A survey on experimental and numerical studies of convection heat transfer of nanofluids inside closed conduits Tập 8 Số 10 - Trang 168781401667356 - 2016
Mohammad Reza Safaei, Mostafa Safdari Shadloo, Marjan Goodarzi, A. Hadjadj, Hamid Reza Goshayeshi, Masoud Afrand, S.N. Kazi
Application of nanofluids in heat transfer enhancement is prospective. They are
solid/liquid suspensions of higher thermal conductivity and viscosity compared
to common working fluids. A number of studies have been performed on the effect
of nanofluids in heat transfer to determine the enhancement of properties in
addition to rearrangement of flow passage configurations. The principal
objective of... hiện toàn bộ
Water-Based Fe2O3 Nanofluid Characterization: Thermal Conductivity and Viscosity Measurements and Correlation Tập 4 - Trang 674947 - 2012
Laura Colla, Laura Fedele, Mauro Scattolini, Sergio Bobbo
An experimental investigation on water-based nanofluids containing iron oxide
(Fe2O3) in concentrations ranging between 5 and 20% in mass is presented. The
purpose of this study is to measure thermal conductivity and dynamic viscosity
of these fluids, as a starting point to study the heat transfer capability. The
stability of the nanofluids was verified by pH and Zeta potential measurements.
A dyn... hiện toàn bộ
Distribution of Pressure Fluctuations in a Prototype Pump Turbine at Pump Mode Tập 6 - Trang 923937 - 2014
Yuekun Sun, Zhigang Zuo, Shuhong Liu, Jintao Liu, Yulin Wu
Pressure fluctuations are very important characteristics in pump turbine's
operation. Many researches have focused on the characteristics (amplitude and
frequencies) of pressure fluctuations at specific locations, but little
researches mentioned the distribution of pressure fluctuations in a pump
turbine. In this paper, 3D numerical simulations using SSTk − ω turbulence model
were carried out to p... hiện toàn bộ
Design and experimental research of an improved stick–slip type piezo-driven linear actuator Tập 7 Số 9 - 2015
Jianping Li, Hongwei Zhao, Mingkun Shao, Xiaoqin Zhou, Zunqiang Fan
A piezo-driven linear actuator based on the improved stick–slip principle is
developed in this article. With the help of two piezo-stacks and flexure hinges,
the preload force can be changed, so the designed actuator can realize
relatively large linear ranges and large output force. The designed actuator
mainly consists of the mover, the stator, two piezo-stacks, an adjusting stage
and the base. T... hiện toàn bộ
Analysis of vehicle headway distribution on multi-lane freeway considering car–truck interaction Tập 8 Số 4 - 2016
Dewen Kong, Xiucheng Guo
The primary objective of this study is to identify the characteristics of
vehicle headway on multi-lane freeway under lane management in China considering
car–truck interaction. More specifically, the study focused on answering the
following two questions: (1) whether the car–truck interaction has impact on
headway, that is, headway varies by different leading and following vehicle
types and (2) w... hiện toàn bộ
Development of a lower limb rehabilitation exoskeleton based on real-time gait detection and gait tracking Tập 8 Số 1 - 2016
Chao Zhang, Gangfeng Liu, Changle Li, Jie Zhao, Hongying Yu, Yanhe Zhu
Hemiplegia, apoplexia, or traffic accidents often lead to unilateral lower limb
movement disorders. Traditional lower limb rehabilitation equipments usually
execute walk training based on fixed gait trajectory; however, this type is
unsuitable for unilateral lower limb disorders because they still have athletic
ability and initiative walking intention on the healthy side. This article
describes a ... hiện toàn bộ
Natural Convection of Nanofluids in a Square Enclosure with a Protruding Heater Tập 4 - 2012
J. Guiet, Marcelo Reggio, P. Vasseur
This paper reports a numerical study on natural convection from a protruding
heater located at the bottom of a square cavity filled with a copper-water
nanofluid. The vertical walls of the cavity are cooled isothermally; the
horizontal ones are adiabatic, and the heater is attached to the bottom wall.
The heat source is assumed either to be isothermal or to have a constant heat
flux. The effective... hiện toàn bộ