Mathematical modeling of non-Newtonian fluid in arterial blood flow through various stenoses
Abstract Since the stenosis geometry of some cardiovascular patients cannot be described by a vertically symmetric function throughout the stenosis, so it motivates us to study the blood flow through a vertically asymmetric stenosis. In addition, we compare the flow quantities in bothvertically symm...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2021-07-01
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| Series: | Advances in Difference Equations |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s13662-021-03492-9 |
| _version_ | 1831793194061266944 |
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| author | Pinyo Owasit Somchai Sriyab |
| author_facet | Pinyo Owasit Somchai Sriyab |
| author_sort | Pinyo Owasit |
| collection | DOAJ |
| description | Abstract Since the stenosis geometry of some cardiovascular patients cannot be described by a vertically symmetric function throughout the stenosis, so it motivates us to study the blood flow through a vertically asymmetric stenosis. In addition, we compare the flow quantities in bothvertically symmetric and asymmetric stenoses. The vertically symmetric stenosis is explained by a vertically symmetric function such as an exponential function in bell shape and a cosine function in cosine shape. The vertically asymmetric stenosis is interpreted by a vertically asymmetric function such as the combination of two different stenosis shapes. Blood is treated as a non-Newtonian fluid which is represented in the power-law model. The finite difference scheme is used to solve governing equations for obtaining the flow quantities such as axial velocity, radial velocity, flow rate, resistance to flow, and skin friction. We investigated the way that the stenosis height, stenosis length, and non-Newtonian behavior affect the flow quantities through three various stenoses. The flow quantities in the bell shape and cosine shape of stenosis show significantly different behavior. Moreover, we found that the flow quantities in the single shape (bell shape or cosine shape) have the same behavior as the flow quantities in the combined shape in the first half part, but have a slightly different behavior in the last half part. |
| first_indexed | 2024-12-22T15:26:14Z |
| format | Article |
| id | doaj.art-18e00ae537c84db88ca89b83d6d7d946 |
| institution | Directory Open Access Journal |
| issn | 1687-1847 |
| language | English |
| last_indexed | 2024-12-22T15:26:14Z |
| publishDate | 2021-07-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Advances in Difference Equations |
| spelling | doaj.art-18e00ae537c84db88ca89b83d6d7d9462022-12-21T18:21:28ZengSpringerOpenAdvances in Difference Equations1687-18472021-07-012021112010.1186/s13662-021-03492-9Mathematical modeling of non-Newtonian fluid in arterial blood flow through various stenosesPinyo Owasit0Somchai Sriyab1M.Sc. Degree Program in Applied Mathematics, Department of Mathematics, Faculty of Science, Chiang Mai UniversityDepartment of Mathematics, Faculty of Science, Chiang Mai UniversityAbstract Since the stenosis geometry of some cardiovascular patients cannot be described by a vertically symmetric function throughout the stenosis, so it motivates us to study the blood flow through a vertically asymmetric stenosis. In addition, we compare the flow quantities in bothvertically symmetric and asymmetric stenoses. The vertically symmetric stenosis is explained by a vertically symmetric function such as an exponential function in bell shape and a cosine function in cosine shape. The vertically asymmetric stenosis is interpreted by a vertically asymmetric function such as the combination of two different stenosis shapes. Blood is treated as a non-Newtonian fluid which is represented in the power-law model. The finite difference scheme is used to solve governing equations for obtaining the flow quantities such as axial velocity, radial velocity, flow rate, resistance to flow, and skin friction. We investigated the way that the stenosis height, stenosis length, and non-Newtonian behavior affect the flow quantities through three various stenoses. The flow quantities in the bell shape and cosine shape of stenosis show significantly different behavior. Moreover, we found that the flow quantities in the single shape (bell shape or cosine shape) have the same behavior as the flow quantities in the combined shape in the first half part, but have a slightly different behavior in the last half part.https://doi.org/10.1186/s13662-021-03492-9Cardiovascular diseaseNon-Newtonian fluidPower-law modelStenosed geometry and flow quantities |
| spellingShingle | Pinyo Owasit Somchai Sriyab Mathematical modeling of non-Newtonian fluid in arterial blood flow through various stenoses Advances in Difference Equations Cardiovascular disease Non-Newtonian fluid Power-law model Stenosed geometry and flow quantities |
| title | Mathematical modeling of non-Newtonian fluid in arterial blood flow through various stenoses |
| title_full | Mathematical modeling of non-Newtonian fluid in arterial blood flow through various stenoses |
| title_fullStr | Mathematical modeling of non-Newtonian fluid in arterial blood flow through various stenoses |
| title_full_unstemmed | Mathematical modeling of non-Newtonian fluid in arterial blood flow through various stenoses |
| title_short | Mathematical modeling of non-Newtonian fluid in arterial blood flow through various stenoses |
| title_sort | mathematical modeling of non newtonian fluid in arterial blood flow through various stenoses |
| topic | Cardiovascular disease Non-Newtonian fluid Power-law model Stenosed geometry and flow quantities |
| url | https://doi.org/10.1186/s13662-021-03492-9 |
| work_keys_str_mv | AT pinyoowasit mathematicalmodelingofnonnewtonianfluidinarterialbloodflowthroughvariousstenoses AT somchaisriyab mathematicalmodelingofnonnewtonianfluidinarterialbloodflowthroughvariousstenoses |