Revival of water table experiment in fluid mechanics courses, part II

Goushcha, Oleg

doi:10.1177/0306419019900986

Cited by 2 publications

(7 citation statements)

References 6 publications

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“…None of them was from the wedge of 20°, as it was also previously shown by Goushcha for low values of supercritical Froude numbers. 4…”

Section: Resultsmentioning

confidence: 99%

“…3 Consequently, the interpretation of this study concurs with the one developed by experts of other universities. 4,8…”

Section: Discussionmentioning

confidence: 99%

“…Under particular conditions for an incompressible flow, the analogous oblique hydraulic jump arises. 4,5,8–10 Both configurations are depicted in Figure 2.…”

Section: Bidimensional Flow Analogymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…2 Unfortunately, the experimental simulation of this type of flow presents the disadvantage of requiring expensive equipment such as a supersonic wind tunnel that not all universities can afford. 3,4 The main objective of this article is to offer a description of the design and manufacture of an experimental equipment that can show the theory behind compressible flow, while collecting data from an incompressible flow like water. The purpose is to illustrate this concept by its hydro-gasdynamic analogy with the hydraulic jump, since it shows similar characteristics of a shock wave and can be easily and economically reproduced.…”

Section: Introductionmentioning

confidence: 99%

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In-house low-cost water table prototype to practically analyse the modelling compressible flow in a fluid engineering course

Armengol

Raush

Gamez-Montero

2022

International Journal of Mechanical Engineering Education

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The present work studies the hydro-gasdynamic analogy between a shock wave, occurring in supersonic internal or external compressible flows, and a hydraulic jump, a sort of normal shock occurring in open-channel flows. It consists of an extensive theoretical framework followed by a practical analysis, the aim of which was to experimentally trigger the hydraulic jump, both normal and oblique, while using a low-cost designed lab prototype. The assembly development, called ‘water table’, arises from the necessity of economical alternatives to expensive supersonic wind tunnels in the experimental study of compressible fluid dynamics. With this objective in mind, a hydraulic canal based on a Laval nozzle was constructed where water flow could accelerate from subcritical to critical to supercritical regime and then return to subcritical regime through a hydraulic jump. In addition, multiple design alternatives were evaluated considering environmental, economic, functional and aesthetics factors. A low-cost implementation was the critical criterion in the design process. The measurements have revealed that the geometry of the nozzle and the wedges designed as obstacles to cause obliquity are the most significant and influential elements in the formation of a hydraulic jump in the experimental set-up. Regarding the experimental variables, the experiments demonstrate the effect of the upstream and downstream heights of the hydraulic jump in the data collection. This experience is a step forward in supporting students in the understanding of compressible flow and its principles by providing an in-house experimental set-up that promotes active learning, motivation and interest in fluid mechanics.

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“…None of them was from the wedge of 20°, as it was also previously shown by Goushcha for low values of supercritical Froude numbers. 4…”

Section: Resultsmentioning

confidence: 99%

“…3 Consequently, the interpretation of this study concurs with the one developed by experts of other universities. 4,8…”

Section: Discussionmentioning

confidence: 99%

“…Under particular conditions for an incompressible flow, the analogous oblique hydraulic jump arises. 4,5,8–10 Both configurations are depicted in Figure 2.…”

Section: Bidimensional Flow Analogymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

In-house low-cost water table prototype to practically analyse the modelling compressible flow in a fluid engineering course

Armengol

Raush

Gamez-Montero

2022

International Journal of Mechanical Engineering Education

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A project-based learning (PBL) on gas dynamic concepts using hydraulic analogy technique

Rajamurugu

2024

International Journal of Mechanical Engineering Education

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This article suggests the hydraulic analogy technique as a cost-effective approach for flow visualization in fluid mechanics, particularly in dealing with challenges related to supersonic flow, such as shock waves and flow past wedges. The project-based learning approach is adopted to engage students in the study effectively. This active learning method allows students to actively participate in research activities, from setting project goals to designing and executing experiments. The article highlights the positive impact of project-based learning on students’ learning outcomes through internal and external evaluations. The study shows that project-based learning enhances technical competence and encourages a lifelong passion for learning. The cost-effectiveness of the hydraulic analogy method inspires neighbouring academic institutions to consider similar approaches, further promoting the use of practical and affordable solutions for flow visualization experiments.

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Revival of water table experiment in fluid mechanics courses, part II

Cited by 2 publications

References 6 publications

In-house low-cost water table prototype to practically analyse the modelling compressible flow in a fluid engineering course

In-house low-cost water table prototype to practically analyse the modelling compressible flow in a fluid engineering course

A project-based learning (PBL) on gas dynamic concepts using hydraulic analogy technique

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