Modelling Hydrodynamic Drag in Swimming using Computational Fluid Dynamics

Marinho, Daniel A.; Barbosa, Tiago M.; Kjendlie, Per L.; Mantripragada, N.; Vilas‐Boas, João Paulo; Machado, Leandro; Alves, Francisco; Rouboa, Abel; Silva, Alcino J.

doi:10.5772/7112

Cited by 3 publications

(2 citation statements)

References 27 publications

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“…CFD also enables the development of predictive models that can be used to efficiently optimize sports facility design, temperature regulation, and thermal comfort management. Research on CFD applied in sports science has been carried out by many previous researchers, including regarding the effects of drafting in swimming using computational fluid dynamics [31], the future of CFD in 2025 and beyond [32], the concept of computational dynamics in cardiac computed tomography and noninvasive quantification of fractional flow reserve [33], CFD in retrospective sports [34], Computational studies of fluid names for propulsion due to the effect of the orientation of the swimmer's hands [34], CFD on particle technology [35] and the application of computational dynamics in modeling forces in swimming [36]. Based on several studies that have been mentioned, many have linked CFD (Computational Fluid Dynamics) in sports science, but it is still limited in the literature review.…”

Section: Introductionmentioning

confidence: 99%

Concept of Computational Fluid Dynamics and Its Application in Sport Science: Bibliometric Analysis of Modelling Thermal Comfort in Sport Hall

Boby Rachmat,

Kristi Agust,

Nur Indri Rahayu

et al. 2023

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Computational Fluid Dynamics (CFD) has become a very effective tool in modeling and analyzing various complex phenomena, including being an integral part of analyzing thermal comfort phenomena. Therefore, this research was carried out to identify developments in the scientific literature related to research on sports science to carry out initial identification of sports hall thermal comfort modeling using dynamic computing concepts, analyzing trends and research focus in this field through bibliometrics. In addition, this research provides a comprehensive insight into the latest scientific contributions and developments in the field of sports science as an initial identification of sports hall thermal comfort modeling using a dynamic computing approach. Bibliometric analysis and theoretical analysis were chosen as research methods. This research also consists of five steps, namely (i) determining the theme and sources of research data; (ii) article data collection; (iii) data processing, (iv) bibliometric analysis, and (v) report preparation. "Computational Fluid Dynamics Design (CFD) in Sport Science" was used as a keyword in this research. Based on the search results, 823 documents were obtained from 1996 to 2023. Research on CFD in sports science will increase in 2022. Many countries, affiliates, and authors have contributed to increasing the number of publications on CFD in sports science, such as the United States with a total of 103 publications. With this research, it is hoped that it will provide insight to researchers, practitioners, and policymakers regarding research directions that may not have been fully explored in the application of CFD in the field of sports in particular, as well as other fields.

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Section: Introductionmentioning

confidence: 99%

Concept of Computational Fluid Dynamics and Its Application in Sport Science: Bibliometric Analysis of Modelling Thermal Comfort in Sport Hall

Boby Rachmat,

Kristi Agust,

Nur Indri Rahayu

et al. 2023

CFDL

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“…Известные абсолютно устойчивые схемы фактически аппроксимируют только гиперболическое уравнение, а параболическое уравнение аппроксимируют при /h → 0, то есть при выполнении почти столь же жесткого условия, как и для классической явной схемы В.К. Саульева и Дюффорта-Франкела [1,2]. Существуют абсолютно устойчивые схемы со счетом по явным формулам, называемые «классики» [3,4].…”

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Абсолютная Устойчивость Явных Разностных Схем Для Уравнения Теплопроводности При Регуляризации По Фурье–Тихонову

Бахмутский,

Bakhmutsky,

2023

ППС

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Аннотация. В статье рассматривается возможность построения простой и абсолютно устойчивой явной разностной схемы для уравнения теплопроводности. Явные схемы для уравнения теплопроводности были фактически вытеснены из практики программирования абсолютно устойчивыми неявными схемами. Однако неявные схемы плохо распараллеливаются, поэтому программы для решения задач теплопроводности, диффузии, подземной гидродинамики и т.п. на громадных пространственных сетках с использованием многопроцессорных вычислительных систем требуют использования явных разностных схем. Это особенно справедливо для многопроцессорных систем терафлопной и выше производительности, объединяющих сотни процессоров. При этом явные схемы должны быть абсолютно устойчивыми или, по крайней мере, их условие устойчивости должно быть не жестче такого же для гиперболических уравнений. В работе предложены модификации явных разностных схем, аппроксимирующих параболическое уравнение и обладающих свойством абсолютной счетной устойчивости. Счетная устойчивость решения, получаемого на каждом временном шаге классической явной схемой, достигается быстрым преобразованием Фурье и последующим синтезом Фурье с регуляризацией по А.Н. Тихонову. При вычислении прямого и обратного преобразований Фурье использован алгоритм Кули-Тьюки быстрого преобразования Фурье. Приведены результаты сопоставления численных расчетов модельных задач с аналитическими решениями. Абсолютная устойчивость предлагаемых явных схем для уравнения теплопроводности позволяет широко использовать их для параллельных вычислений. Ключевые слова: явные схемы, уравнение теплопроводности, регуляризация, преобразования Фурье Благодарности. Исследование выполнено в рамках госзадания ФНЦ НИИСИ РАН «Проведение фундаментальных научных исследований (47 ГП)» по теме № FNEF-2022-0019, рег.

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Swimmer simulation using robot manipulator dynamics under steady water

Shinohara

2010

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To help swimmers improve, we have developed a computational swimming model using underwater manipulator dynamics. We formulate the equations of the underwater manipulator dynamics using the fluid drag, which is proportional to the square of the velocity. We construct a swimming model consisting of several links based on these equations. The distance traveled by the optimal swimming motion is derived using the model. The input parameters are the joint torques. The arm and leg positions in the model are determined from the joint torques. The force transmitted from the water to the manipulator is defined to be the action force, and the force transmitted from the manipulator to the water is defined to be the reaction force. This reaction force is defined to be the propulsion force. By combining the propulsion force generated by the arms and legs and the frictional drag with respect to the body we can calculate the distance traveled. To optimize the propulsion, which depends on the swimmer's motion, a variational approach using the Lagrange function is applied. We can use the model to simulate 2D pseudo-backstroke motion. Our model has a lower cost than other techniques in the literature, because it does not require computational fluid dynamics (CFD). The swimmer velocity calculated by our model agrees quite closely with the results in the literature. The model qualitatively captures the movement of an actual swimmer.

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Modelling Hydrodynamic Drag in Swimming using Computational Fluid Dynamics

Cited by 3 publications

References 27 publications

Concept of Computational Fluid Dynamics and Its Application in Sport Science: Bibliometric Analysis of Modelling Thermal Comfort in Sport Hall

Concept of Computational Fluid Dynamics and Its Application in Sport Science: Bibliometric Analysis of Modelling Thermal Comfort in Sport Hall

Абсолютная Устойчивость Явных Разностных Схем Для Уравнения Теплопроводности При Регуляризации По Фурье–Тихонову

Swimmer simulation using robot manipulator dynamics under steady water

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