Non-sinusoidal waveform effects on heat transfer performance in pulsating pipe flow

Roslan, Rozaini; Abdulhameed, Mohammed; Hashim, Ishak; Chamkha, Ali J.

doi:10.1016/j.aej.2016.08.012

Cited by 14 publications

(7 citation statements)

References 17 publications

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“…Data on document analysis furthermore confirm that scholarly output in the form of a mathematical expression that contributes to the specific field of theory is one of the remarkable outcomes. Figure 2 shows the evidence on processes that were recorded in a published article where a new term of heat flow in a pulsating pipe with radius r [34] was produced, which was derived by P1 and his research group. Based on the emerging elements that support axiomatization of the first category, it is clear that the fundamental method on the processes of producing new mathematical terms for a system studied is by governing it using basic fundamental theories or formulae.…”

Section: Source (P2 2:12)mentioning

confidence: 99%

Mathematical Modeling Research Output Impacting New Technological Development: An Axiomatization to Build Novelty

Bajuri

Siri

Abdullah

2022

Axioms

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The mathematical modeling of research-based output impacting new technology development is crucial for a developing country. However, the complexity of modern mathematical modeling research output makes it unclear over how it can impact the development of new technology. Therefore, this study aims to explore, categorize and formulize the axioms of mathematical modeling research output that impacts the development of new technology. Seven participants were involved in this research. Interviews were conducted to explore their remarkable mathematical modeling output and how the output can impact the development of new technology. The categorization axioms are: i. mathematical modeling for theorizing, ii. mathematical modeling for simulations, iii. mathematical modeling for useable innovation and iv. patent and product commercialization. Finally, the categorization can be formulized as an axiom of mathematical modeling novelty, which is the desired research output. Moreover, patents and commercialization are the elements that mathematical modeling should possess for new technological development. The limited number of participants involved in this study makes this study formulation limited to only some types of mathematical modeling output. However, this substantive formulation could give some ideas in proposing the path and processes on how to enhance the effort for society to develop the culture of mathematical modeling in developing new technology.

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Section: Source (P2 2:12)mentioning

confidence: 99%

Mathematical Modeling Research Output Impacting New Technological Development: An Axiomatization to Build Novelty

Bajuri

Siri

Abdullah

2022

Axioms

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“…The significance of these non-sinusoidal waveforms can be found in signal processing. 39,40 The impact of non-sinusoidal waveforms on the convective onset and heat transport was extensively examined by Siddheshwar and Kanchana, 41 Kanchana et al, 42 and Pranesh et al 43 They reported that a square waveform enhances heat transport compared to other waveforms.…”

Section: Introductionmentioning

confidence: 99%

“…Non‐sinusoidal waveforms such as square, triangular, and sawtooth contain several sinusoidal waveforms with varying frequencies, whereas sinusoidal waveforms have a single frequency. The significance of these non‐sinusoidal waveforms can be found in signal processing 39,40 . The impact of non‐sinusoidal waveforms on the convective onset and heat transport was extensively examined by Siddheshwar and Kanchana, 41 Kanchana et al, 42 and Pranesh et al 43 They reported that a square waveform enhances heat transport compared to other waveforms.…”

Section: Introductionmentioning

confidence: 99%

Rayleigh–Bénard convection in a Boussinesq–Stokes ferromagnetic fluid under sinusoidal and non‐sinusoidal internal heat modulation

Meghana

Pranesh

2022

Heat Trans

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Internal heat modulation has several applications in nuclear reactor design and safety, as well as meteorology. In this paper, the influence of internal heat modulation on Rayleigh-Bénard convection in a Boussinesq-Stokes ferromagnetic fluid is explored using linear and nonlinear analyses. The impact of the square, sine, triangular, and sawtooth wave type of internal heat modulation on the onset of convection and heat transport is considered. Using a Venezian method, linear stability analysis is performed to derive the correction Rayleigh number and the critical Rayleigh number for all four waveforms. A nonautonomous Lorenz model is derived and solved for the amplitude to obtain the Nusselt number, which quantifies the heat transport. The impact of the nondimensional parameter on the convective onset and heat transfer under heat source/sink modulation is analyzed. The study shows that all four types of internal heat modulation destabilize the system. It is also found that the presence of a heat source/sink modulation affects the impact of all four types of internal heat modulation on heat transport.

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“…They showed that amplitude of temperature oscillations were a function of system variables only. Heat transfer performance in pulsating constant heat tubes was examined by Roslan, R., Abdulhameed, M., Hashim, I., & Chamkha, A. J [9] .They indicated that only a range of frequency can affect pulsations. Bao-Jing Zheng, Xiao-Wei Gao,Kai Yang, and Chuan-Zeng [10] proposed a novel meshless Petro-Galerkin method for combining thermal and elasticity equations.…”

Section: Introductionmentioning

confidence: 99%

Oscillating Flows in Circular Pipes

2019

IJITEE

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Pulsation flows in pipes heated externally produces oscillating temperature field. This type of unsteady flow happens in heat exchangers. Simulating this type of flows is complex in engineering. In this present study the field variables like velocity and temperature are calculated by numerical control volume scheme. Velocity pulsation is applied at inlet of pipe to produce oscillations. Simulation variables like lengths, diameter and thickness of the pipe are considered as parameters for this study. Also additionsl structural constraints has been added to see how it influences effective thermal stresses.

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Non-sinusoidal waveform effects on heat transfer performance in pulsating pipe flow

Cited by 14 publications

References 17 publications

Mathematical Modeling Research Output Impacting New Technological Development: An Axiomatization to Build Novelty

Mathematical Modeling Research Output Impacting New Technological Development: An Axiomatization to Build Novelty

Rayleigh–Bénard convection in a Boussinesq–Stokes ferromagnetic fluid under sinusoidal and non‐sinusoidal internal heat modulation

Oscillating Flows in Circular Pipes

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