Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Farzad Mohebbi"'
Autor:
Farzad Mohebbi, Mathieu Sellier
Publikováno v:
International Journal of Thermofluids, Vol 22, Iss , Pp 100638- (2024)
The rheology of a fluid is often difficult to measure in situ and in real time. This work investigates whether it is possible to recover rheological information from direct field observations. We present a closed-form analytical solution for inverse
Externí odkaz:
https://doaj.org/article/99c190ac2a204922808140b9273581cd
Autor:
Farzad Mohebbi, Mathieu Sellier
Publikováno v:
International Journal of Thermofluids, Vol 16, Iss , Pp 100253- (2022)
An inverse analysis for simultaneous identification of three rheological parameters of non-Newtonian Herschel-Bulkley fluids from free surface data is presented. The three-dimensional gravity-driven thin film of the Herschel-Bulkley fluid flowed down
Externí odkaz:
https://doaj.org/article/15fa0761bc454eed8f5a294689c515a3
Autor:
Farzad Mohebbi, Mathieu Sellier
Publikováno v:
International Journal of Thermofluids, Vol 15, Iss , Pp 100184- (2022)
Based on new explicit expressions for sensitivity coefficients, this study proposes a new method to solve two inverse problems in time-dependent three-dimensional gravity-driven thin film flow down an inclined plane governed by free-surface lubricati
Externí odkaz:
https://doaj.org/article/4650bd42bc5146969bc059c47721bf27
Autor:
Farzad Mohebbi, Ben Evans
Publikováno v:
International Journal of Thermofluids, Vol 1, Iss , Pp 100009- (2020)
A numerical inverse analysis based on explicit sensitivity coefficients is developed for the simultaneous estimation of heat flux and heat transfer coefficient imposed on different parts of boundary of a general irregular heat conducting body made of
Externí odkaz:
https://doaj.org/article/51f3d206b1c44bb89c53a6a3970971f9
Autor:
Farzad Mohebbi, Mathieu Sellier
Publikováno v:
Energies, Vol 14, Iss 16, p 5073 (2021)
This paper presents a numerical method to address function estimation problems in inverse heat transfer problems using parameter estimation approach without prior information on the functional form of the variable to be estimated. Using an inverse an
Externí odkaz:
https://doaj.org/article/0cd7269ddf8b4a7e99c9bd6237460696
Publikováno v:
Fluids, Vol 6, Iss 3, p 106 (2021)
This study presents an extension of a previous study (On an Exact Step Length in Gradient-Based Aerodynamic Shape Optimization) to viscous transonic flows. In this work, we showed that the same procedure to derive an explicit expression for an exact
Externí odkaz:
https://doaj.org/article/638af35b78734529b8e57221edd1cd48
Autor:
Farzad Mohebbi
Publikováno v:
Computation, Vol 8, Iss 4, p 95 (2020)
Explicit expressions are obtained for sensitivity coefficients to separately estimate temperature-dependent thermophysical properties, such as specific heat and thermal conductivity, in two-dimensional inverse transient heat conduction problems for b
Externí odkaz:
https://doaj.org/article/20aa1593815b40b786e34cb0a5aa79e2
Autor:
Farzad Mohebbi
Publikováno v:
Energies, Vol 13, Iss 17, p 4410 (2020)
A new sensitivity analysis scheme is presented based on explicit expressions for sensitivity coefficients to estimate timewise varying heat flux in heat conduction problems over irregular geometries using the transient readings of a single sensor. Th
Externí odkaz:
https://doaj.org/article/badba28600e54fadba546e9174667e9d
Autor:
Farzad Mohebbi, Ben Evans
Publikováno v:
Fluids, Vol 5, Iss 2, p 70 (2020)
This study proposeda novel exact expression for step length (size) in gradient-based aerodynamic shape optimization for an airfoil in steady inviscid transonic flows. The airfoil surfaces were parameterized using Bezier curves. The Bezier curve contr
Externí odkaz:
https://doaj.org/article/57e6164ca42f4388ace71884105724e9
Publikováno v:
Fluids, Vol 4, Iss 2, p 102 (2019)
This paper presents a novel and accurate method to implement the Kutta condition in solving subsonic (subcritical) inviscid isentropic compressible flow over isolated airfoils using the stream function equation. The proposed method relies on body-fit
Externí odkaz:
https://doaj.org/article/3a677cf8fa3242f48833941a50481fb1