Hydrocephalic cerebrospinal fluid flowing rotationally with pulsatile boundaries: A mathematical simulation of the thermodynamical approach. Issue 1 (January 2023)

• Record Type: Journal Article
• Authors: Balasundaram, Hemalatha; Sathyamoorthi, Senthamilselvi; Fernandez-Gamiz, Unai; Noeiaghdam, Samad; Santra, Shyam Sundar
• Is Part Of: Theoretical & applied mechanics letters. Volume 13:Issue 1(2023)
• Publication Date: 2023-01
• Subjects: Brain parenchyma -- Cerebrospinal fluid -- Hydrocephalus -- Ventricular elasticity -- Intracranial pressure differences; Mechanics, Applied -- Periodicals; Mechanics, Analytic -- Periodicals; Mechanics, Analytic; Mechanics, Applied; Periodicals; 620.1
• DOI: 10.1016/j.taml.2022.100418
• Languages: English
• ISSNs: 2095-0349

Abstract

Highlights: This paper introduces the fluid mechanics of CSF circulation flowing oscillatory inside the cranium system. The equation of motion ventricular area inside the porous medium with suitable pulsatile boundary conditions are solved. The simulated proposed in this paper is obtained for CSF physio-pathological disease hydrocephalus patients. We determine the CSF flow velocity of patients by suitable validity. Abstract: To study the kinematics of flow rate and ventricular dilatation, an analytical perturbation approach of hydrocephalus has been devised. This research provides a comprehensive investigation of the characteristics of cerebrospinal fluid (CSF) flow and pressure in a hydrocephalic patient. The influence of hydrocephalic CSF, flowing rotationally with realistic dynamical characteristics on pulsatile boundaries of subarachnoid space, was demonstrated using a nonlinear controlling system of CSF. An analytical perturbation method of hydrocephalus has been developed to investigate the biomechanics of fluid flow rate and the ventricular enlargement. In this paper presents a detailed analysis of CSF flow and pressure dynamics in a hydrocephalic patient. It was elaborated with a nonlinear governing model of CSF to show the influence of hydrocephalic CSF, flowing rotationally with realistic dynamical behaviors on pulsatile boundaries of subarachnoid space. In accordance with the suggested model, the elasticity factor changes depending on how much a porous layer, in this case the brain parenchyma, is stretched. It was improved to include the relaxation of internal mechanical stresses for various perturbation orders, modelling the potential plasticity of brain tissue. The initial geometry that was utilised to create the framework of CSF with pathological disease hydrocephalus and indeed the output of simulations using this model were compared to the actual progression of ventricular dimensions and shapes in patients. According to this observation, the non - linear and elastic mechanical phenomena incorporated into the current model are probably true. Further modelling of ventricular dilation at a normal pressure may benefit from the existence of a valid model whose parameters approximate genuine mechanical characteristics of the cerebral cortex.