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Zhu Li, Chengen Qi, Rui Gao, Bin Yu, Yiran Zhu, Hong Zhang and Jingyu Zhang
Fracturing hard roofs by ground hydraulic action is an important control technology for the strong mine pressure in the stope. In this paper, a new simulation method, ?separate + interface,? is proposed, and two physical simulation experiments are conduc...
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Anil Basaran and Ali Cemal Benim
Nowadays, the demand for obtaining high heat flux values in small volumes has increased with the development of technology. Condensing flow inside mini- and microchannels has been becoming a promising solution for refrigeration, HVAC, air-conditioning, h...
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Xinfeng Wang, Qiao Zhang, Wengang Liu, Youyu Wei, Tian Jiang and Fuxu Hao
In order to explore the fracture law and structural evolution characteristics of overlying strata in deep high-stress mining, according to the geometric characteristics and mechanical causes of overlying strata in different mining stages of the stope, fo...
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Mario Carta, Tiziano Ghisu and Shahrokh Shahpar
Due to the increasingly high turbine inlet temperatures, heat transfer analysis is now, more than ever, a vital part of the design and optimization of high-pressure turbine rotor blades of a modern jet engine. The present study aimed to find out how shap...
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Keqi Liu, Wantao Ding and Chunxu Qu
The penetration characteristics of the slurry and the support pressure transfer mechanisms are critical to the tunnel face stability control during a mechanized excavation. In this paper, numerical calculations coupling computational fluid dynamics (CFD)...
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Yuce Liu, Luisa Rossetto and Andrea Diani
A comparative analysis of the flow boiling characteristics of R450A, R515B, and R1234ze(E) inside a 7.0 mm OD microfin tube was performed. The mass velocity was explored from low values, starting from 50 kg m-2 s-1, up to 400 kg m-2 s-1, and the heat flu...
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Mohamed H. Ahmed
Heat transfer through tube walls can be promoted using a ribbed tube configuration. Most of the ribs used in previous reports have equal height along the tube length. In this numerical study, we investigate the heat transfer and pressure drop in a transv...
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Taha Moriyama and Hiroyuki Kajimoto
This study proposes a haptic vest and a sensing glove for transferring the tactile information from the fingers to the back. We developed a haptic vest installed with 80 voice-coil type vibrators and a sensing glove that can detect up to 100 points of fi...
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Areum Lee, Chinnasamy Veerakumar and Honghyun Cho
This paper discusses the forced convective heat transfer characteristics of water?ethylene glycol (EG)-based Fe3O4 nanofluid and Fe3O4?MWCNT hybrid nanofluid under the effect of a magnetic field. The results indicated that the convective heat transfer co...
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Michele Calati, Edoardo De Monte and Simone Mancin
In recent years, in order to counteract the growth of environmental pollution and the contemporary scarcity of various energy sources, researchers have proposed innovative and efficient solutions for heat transfer applications. Extended surfaces, which c...
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R. P. Pogrebnyak,M. R. Pohrebniak
Pág. 88 - 98
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Alexander V. Murray, Peter T. Ireland, Tsun Holt Wong, Shaun Wei Tang and Anton J. Rawlinson
The continuing rise in turbine entry temperatures has necessitated the development of ever-more advanced cooling techniques. Effusion cooling is an example of such a system and is characterised by a high density of film cooling holes that operate at low ...
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Mária Zedníková, Sandra Orvalho, Marie Fialová and Marek C. Ruzicka
The paper presents a brief overview of experiments on volumetric mass transfer coefficient in bubble columns. The available experimental data published are often incomparable due to the different type of gas distributor and different operating conditions...
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Mohsen Beigi
Pág. 109 - 116
This study aimed at mathematical modelling and determination of mass transfer parameters of celeriac slices during vacuum drying at different temperatures and vacuum pressures. The usefulness of eight mathematical thin layer models to simulate the drying...
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Antoniu Predescu,Elena Diaconu,Maria-Loredana Popescu,Mihaela-Diana Oancea-Negescu
Pág. 93 - 98
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Yanhong Wang, Sufen Li and Ming Dong
In order to obtain a deeper understanding of the regenerative cooling process of scramjet engines, in this paper, a numerical investigation on the supercritical convective heat transfer of n-decane in horizontal circular tubes was conducted, based on a c...
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Devia Gahana
Pág. 23 - 33
Heat exchanger is one of the supporting production equipment that move the heat energy from one of fluid to another fluid flow. One example of a heat exchanger in power plant industry is High Pressure Heater (HPH). HPH is high pressure feedwater heater t...
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Takeshi Yasunaga, Takafumi Noguchi, Takafumi Morisaki and Yasuyuki Ikegami
Ocean thermal energy conversion (OTEC) harvests the power from the thermal energy in the ocean, which is reserved in the ocean as the temperature difference between warm surface and cold deep seawaters. In the energy conversion, the heat exchangers trans...
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Priyanka Dhopade, Benjamin Kirollos, Peter Ireland and Leo Lewis
In this paper, we compare using computational fluid dynamics the aero-thermal performance of two candidate casing manifolds for supplying an impingement-actuated active tip clearance control system for an aero-engine high-pressure turbine. The two geomet...
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Nikolay Pogozhikh,Andrey O. Pak,Alina V. Pak,Andrii Goralchuk,Sergei Sabadash,Nikolay Chekanov
Pág. 16 - 21
The need to find solutions to problems on the efficient use of energy resources has been substantiated, under conditions for meeting the requirements to the environmental sustainability of production in the process of executing such technological operati...
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