Browsing Engineering, Built Environment and Information Technology by UP Author "Heyns, P.S. (Philippus Stephanus)"
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Browsing Engineering, Built Environment and Information Technology by UP Author "Heyns, P.S. (Philippus Stephanus)"
Now showing items 21-40 of 103
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Barbaryan, T.; Hoseinzadeh, Siamak; Heyns, P.S. (Philippus Stephanus); Barbaryan, M. (Emerald, 2020-02)PURPOSE : This study aims to develop a new design for the fluid-safety valve to make it more environmentally friendly. DESIGN/METHODOLOGY/APPROACH : Computational fluid dynamics is carried out to analyse the behaviour of ...
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Hoseinzadeh, Siamak; Heyns, P.S. (Philippus Stephanus) (American Society of Mechanical Engineers, 2022-07)Thermal power plants play a significant role in generating power, electricity, and energy consumption in the world, especially in developing countries. Therefore, the energy analysis of these power plants is very useful ...
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Dunne, R.K.; Desai, Dawood A.; Heyns, P.S. (Philippus Stephanus) (Elsevier, 2021-02)The importance of accurate airflow resistivity predictive models and a subsequent comprehensive database of acoustic material properties for designers cannot be underestimated. With the advances in Finite Element Analysis ...
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Lelo, Nzita Alain; Heyns, P.S. (Philippus Stephanus); Wannenburg, Johann (Emerald, 2023-03)PURPOSE : Industry decision makers often rely on a risk-based approach to perform inspection and maintenance planning. According to the Risk-Based Inspection and Maintenance Procedure project for the European industry, ...
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Dunne, Regan; Desai, Dawood; Heyns, P.S. (Philippus Stephanus) (Extrica, 2023-09)This study develops an empirical model to predict the airflow resistivity of thin and low-density sound-absorbing materials. Airflow resistivity is a key input parameter for Finite Element Method (FEM) simulations of ...
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Schmidt, Stephan; Heyns, P.S. (Philippus Stephanus); Gryllias, Konstantinos C. (Elsevier, 2019-02)Performing condition monitoring on critical machines such as gearboxes is essential to ensure that the machines operate reliably. However, many gearboxes are exposed to variable operating conditions which impede the condition ...
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Mbawalwa, S.J.; Heymann, Gerhard; Roth, C.P. (Chris); Heyns, P.S. (Philippus Stephanus) (South African Institution of Civil Engineering, 2017-12)Design of machine foundations requires the prediction of the dynamic response of the foundation system at the frequencies of interest. The response is typically quantified in terms of a number of parameters that include ...
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Aye, S.A. (Sylvester Aondolumun); Heyns, P.S. (Philippus Stephanus) (World Academy of Science, Engineering and Technology, 2011)The effect of the rotational speed and axial torque on the diagnostics of tapered rolling element bearing defects was investigated. The accelerometer was mounted on the bearing housing and connected to Sound and Vibration ...
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Wang, K.S.; Heyns, P.S. (Philippus Stephanus) (Elsevier B.V., 2011-12)To implement traditional order tracking in practice requires rotational speed information. However, it may be difficult in some cases to mount an appropriate monitoring device to obtain reliable speed information. In this ...
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Kariman, Hamed; Hoseinzadeh, Siamak; Heyns, P.S. (Philippus Stephanus) (Elsevier, 2019-12)Considering future crises on freshwater scarcity, a new type of industrial desalination equipment is investigated in this paper. This device is powered by electric energy to evaporate the wastewater and is environmentally ...
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Kariman, H.; Hoseinzadeh, Siamak; Shirkhani, A.; Heyns, P.S. (Philippus Stephanus); Wannenburg, Johann (Springer, 2020-05)Please read abstract in the article.
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Schmidt, Stephan; Zimroz, Radoslaw; Heyns, P.S. (Philippus Stephanus) (Elsevier, 2021-07)Condition monitoring is very important to avoid unexpected breakdowns of expensive rotating machines found in the power generation and mining industries. The fault information in vibration signals is often buried in low ...
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Van Niekerk, Johannes Lodewikus; Heyns, P.S. (Philippus Stephanus); Hindley, M.P.; Erasmus, C. (Elsevier, 2020-09)The degradation of high energy piping systems is very complex to simulate due to the many variables that influence the useful lives of such systems. Estimation of the extent of degradation is however important in the ...
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Eulerian laser Doppler vibrometry : online blade damage identification on a multi-blade test rotor Oberholster, Abraham Johannes (Abrie); Heyns, P.S. (Philippus Stephanus) (Elsevier, 2011-01)Laser Doppler vibrometry enables the telemetry-free measurement of online turbomachinery blade vibration. Specifically, the Eulerian or fixed reference frame implementation of laser vibrometry provides a practical solution ...
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Pyper, Andreas; Heyns, P.S. (Philippus Stephanus) (Sage, 2019-09)This paper presents an investigation on a distributed regenerative braking system for freight trains. The system, which involves installing regenerative braking units on the bogies of freight rail wagons, is proposed in a ...
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Aye, S.A. (Sylvester Aondolumun); Heyns, P.S. (Philippus Stephanus) (Southern African Institute of Mining and Metallurgy, 2011-11)Vibration levels on a variety of equipment in a South African opencast mine were measured in this study. The well-established ISO 2631-1 (1997) standard methodology was used for the computation of weighted root mean ...
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Hoseinzadeh, Siamak; Yargholi, Roya; Kariman, Hamed; Heyns, P.S. (Philippus Stephanus) (Wiley, 2020-09)In this research, the integrated carbon dioxide power cycle with the geothermal energy source to supply the required reverse osmosis desalination power for freshwater production is defined. The cycling power is consumed ...
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Fourie, Daniel Johannes; Grabe, Petrus Johannes; Heyns, P.S. (Philippus Stephanus); Frohling, Robert D. (Sage, 2016)Tonal squeal noise (i.e. the high amplitude singing of a railway wheel with pure tone components) is emitted by some trailing inner wagon wheels on heavy haul trains in 1000m radius curves on the iron ore export line in ...
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Bahrami, A.; Hoseinzadeh, Siamak; Heyns, P.S. (Philippus Stephanus); Mirhosseini, S.M. (American Institute of Physics, 2019-12-11)An experimental flow control technique is given in this paper to study the jet effect on the coflow jet’s airfoil with injection and suction and compared with the jet-off condition. The airfoil is CFJ0025-065-196, and the ...
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Talai, S.M.; Desai, D.A.; Heyns, P.S. (Philippus Stephanus) (Sage, 2017-01)This article pertains to the prediction of structural vibration frequencies from frictional temperature evolution through numerical simulation. To achieve this, a finite element analysis was carried on AISI 304 steel ...
Now showing items 21-40 of 103