An experimental and three-dimensional numerical study on the convective heat transfer inside a trapezoidal duct under constant wall temperature

Onur, Nevzat; Turgut, Oğuz; Arslan, Kamil; Kurtul, Özen

doi:10.1007/s00231-008-0423-3

Cited by 6 publications

(2 citation statements)

References 11 publications

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“…Nevzat researched the convective heat transfer of air inside a trapezoidal duct under constant wall temperature when the Reynolds number varies from 2.6 × 10 3 to 67 × 10 3 . 1 Lu and Jiang investigated the convection heat transfer of air in a rectangular channel with different ribs. 2 Tan et al analyzed the relation between convection heat transfer and the geometrical parameters of twisted tubes.…”

Section: Introductionmentioning

confidence: 99%

A non-intrusive oil temperature measurement method of hydraulic system

Cai

Zhi-yong

et al. 2014

Review of Scientific Instruments

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This paper proposed a simple non-intrusive oil temperature measurement method to overcome the shortcomings of the traditional intrusive one. The heat transmission model between outer and inner tube wall, the temperature distribution model of oil near the inner tube wall, and the temperature distribution model of oil in tube were established, respectively, based on the energy conservation principle. With the constructed models, we can measure the temperature of oil in tube by surveying the temperature of outer tube wall and the temperature of air around the tube. An oil temperature measurement apparatus was designed to demonstrate the new method. We measured the temperature of No. 46 antiwear hydraulic oil under 5 MPa, 15 MPa, and 25 MPa, respectively. Comparative results with traditional intrusive oil temperature measurement method show that the measurement error of the presented method is less than 1 °C, and thus implies its superiority.

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Section: Introductionmentioning

confidence: 99%

A non-intrusive oil temperature measurement method of hydraulic system

Cai

Zhi-yong

et al. 2014

Review of Scientific Instruments

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“…Non-invasive measurement method can effectively avoid the monitored object decomposition, and improve the safety and convenience. Nevzat performed experiments and numerical analysis in thermal conductivity of the horizontal trapeziform catheter at constant wall temperature, with the Reynolds number from 2.6×10 3 to 6.7×10 4 under turbulent conditions, and presented the correlations between Reynolds number and the Nusselt number, Reynolds and Darcy friction factor, respectively [1] . Zhukova investigated the intensification of the heat transfer from a cylinder in a viscous oil medium due to the setting of arched guide plates based on the numerical solution of the Navier-Stokes and energy equations, and researched the relationship between the numerical forecasts of the drag, local heat transfer, thermo-hydraulic efficiency, and total Nusselt number [2] .…”

Section: Introductionmentioning

confidence: 99%

A Non-Invasive Oil Temperature Measurement Technology Based on Heat Transfer Model

Cai

Dai

et al. 2014

AMM

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Oil temperature plays a key role in state monitoring and fault diagnosis of hydraulic systems. Traditional methods for measuring oil temperature are neither convenient nor safe. In this paper, a non-invasive test technique together with its calculation model for obtaining fluid temperature is proposed by measuring the pipe surface temperature and the ambient temperature. A series of experiments had been carried out on different pressure values, and the oil temperature calculation model proposed was optimized accordingly. Experimental results show that this measurement technique together with the model can provide a fast and accurate way of oil temperature testing non-invasively under different pressure conditions, so it can be introduced to the hydraulic system application.

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Experimental and numerical investigation of transition to turbulent flow and heat transfer inside a horizontal smooth rectangular duct under uniform bottom surface temperature

Arslan

Onur

2013

Heat Mass Transfer

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An experimental and three-dimensional numerical study on the convective heat transfer inside a trapezoidal duct under constant wall temperature

Cited by 6 publications

References 11 publications

A non-intrusive oil temperature measurement method of hydraulic system

A non-intrusive oil temperature measurement method of hydraulic system

A Non-Invasive Oil Temperature Measurement Technology Based on Heat Transfer Model

Experimental and numerical investigation of transition to turbulent flow and heat transfer inside a horizontal smooth rectangular duct under uniform bottom surface temperature

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