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In this paper, we investigate the optimal conditions to the boundaries where the unique existence of the solutions to an advection-diffusion-reaction equation is secured by applying the contraction mapping theorem from the study of fixed points. Also, we extract, traveling wave solutions of the underlying equation. To this purpose, a new extended direct algebraic method with traveling wave transformation has been used. Achieved soliton solutions are different functions which are hyperbolic, trigonometric, exponential, and some mixed trigonometric functions. These functions show the nature of solitons. Two and three-dimensional plots are drawn using different values of parameters and coefficients for the comparison and behavior of solitons as combined bright-dark, dark, and bright solitons.
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http://dx.doi.org/10.1038/s41598-024-69445-w | DOI Listing |
Math Biosci Eng
June 2025
I3A and Fluid Mechanics Department, University of Zaragoza, Spain.
Parametrized problems involve high computational costs when looking for the proper values of their input parameters and solved with classical schemes. Reduced-order models (ROMs) based on the proper orthogonal decomposition act as alternative numerical schemes that speed up computational times while maintaining the accuracy of the solutions. They can be used to obtain solutions in a less expensive way for different values of the input parameters.
View Article and Find Full Text PDFComput Methods Biomech Biomed Engin
July 2025
Department of Mechanical Engineering, Tufts University, Medford, MA, USA.
Abdominal Aortic Aneurysm (AAA) is a potentially life-threatening permanent, localized dilation in the abdominal aorta wall. Previous studies have suggested that the presence of a layer of intraluminal thrombus (ILT), which is found adhering to the wall inner surface in 80-90% of all AAAs, is associated with a significant decrease in the oxygen (O) level within the wall. However, although turbulence normally has a major influence on solute transport, its effect on this decrease has not yet been investigated.
View Article and Find Full Text PDFSci Rep
February 2025
Department of Mathematics, University of Management and Technology, Lahore, Pakistan.
This paper focuses on the dynamical analysis of the advection-diffusion-reaction equation under various conditions that highlight the system's sensitivity and potential for chaotic behavior. Traveling wave solutions for the underlying equation are derived using a novel modified [Formula: see text] expansion method based on the traveling wave transformation. A broad spectrum of exact traveling wave solutions, including solitons, kinks, periodic solutions, and rational solutions, is obtained.
View Article and Find Full Text PDFNeural Netw
May 2025
MOX, Department of Mathematics, Politecnico di Milano, Piazza Leonardo da Vinci 32, Milan, 20133, Italy. Electronic address:
In this work, we present the novel mathematical framework of latent dynamics models (LDMs) for reduced order modeling of parameterized nonlinear time-dependent PDEs. Our framework casts this latter task as a nonlinear dimensionality reduction problem, while constraining the latent state to evolve accordingly to an unknown dynamical system. A time-continuous setting is employed to derive error and stability estimates for the LDM approximation of the full order model (FOM) solution.
View Article and Find Full Text PDFArXiv
October 2024
Department of Mechanical Engineering, University of Michigan, United States.
Targeting signaling pathways that drive cancer cell migration or proliferation is a common therapeutic approach. A popular experimental technique, the scratch assay, measures the migration and proliferation-driven cell closure of a defect in a confluent cell monolayer. These assays do not measure dynamic effects.
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