Computational Fluid Flow Study on the Pressure Fluctuation Caused by the Vortex Flow Arising from Underwater Exercises of Arthritis Patients

Jong Im Kim; Kwang Hun Choi; Sung Young Park

doi:10.4028/www.scientific.net/DDF.390.8

Paper Titles

A Multi-Fluid Investigation of the Membrane Supporting Grid Effects on the Richtmyer-Meshkov Instability
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Computational Fluid Flow Study on the Pressure Fluctuation Caused by the Vortex Flow Arising from Underwater Exercises of Arthritis Patients
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Analysis of the Leakage-Flow-Induced Vibration of a Slip Joint in a Jet Pump of a Boiling Water Reactor
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Heat Treatments Effects on NickeI-Based Superalloy Inconel 713C
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Measurement of the Thermal Properties of Innovative Highly-Insulating Non-Structural Concretes
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A New Thermal Model in SAE-AISI 1524 Friction Stir Welding
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Interfacial Tension and Viscosity Alteration of Samarium Doped Yttrium Iron Garnet (YIG) Nanofluid under the Presence of Electromagnetic Waves
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Filmwise Condensation of Steam on Pin Fin Arrays Fabricated by Selective Laser Melting
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Computational Fluid Flow Study on the Pressure Fluctuation Caused by the Vortex Flow Arising from Underwater Exercises of Arthritis Patients

Abstract:

Underwater exercise programs are among the nursing programs for which positive effects have been reported with regard to the promotion of good health in diverse subjects, such as patients suffering arthritis, as well as elderly people and middle-aged women. Through many previously conducted studies, subjects participating in underwater exercises have been reported to continuously experience reduced pain, and improvement in muscle strength, flexibility, sense of balance, and muscular endurance. However, few studies have delved into the fundamental phenomena of positive effects of underwater exercises on the human body. In this study, a model of the upper limbs of the human body was used in a simulation of underwater exercises to analyse the resulting pressure fluctuation on the skin of the hands and arms of the model through the methods of computational fluid dynamics. During the simulation of underwater exercises, pressure fluctuation of diverse frequencies, arising from the vortex flow around the articulations of the fingers and hands of the model, were identified and were seen to create varied cutaneous stimulations and massage effects. Such cutaneous stimulations seem to continuously excite capillary vessels situated between hands and finger joints, creating positive effects in blood circulation around pain sites of patients suffering from arthritis.

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Periodical:

Defect and Diffusion Forum (Volume 390)

Pages:

8-22

DOI:

https://doi.org/10.4028/www.scientific.net/DDF.390.8

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Online since:

January 2019

Authors:

Jong Im Kim, Kwang Hun Choi, Sung Young Park

Keywords:

Frequency, Pressure Fluctuation, Underwater Exercise, Upper Limbs, Vortex Flow

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References

[1] J. I. Kim, An Effect of Underwater exercise Program with Self-help Group Activities and Strategies for Promoting Self-efficacy on Pain, Physiological Parameters and Quality of Life in Patients having Rheumatoid Arthritis, Doctoral Dissertation, Seoul National University. Seoul, (1994).