Biot's coefficient wikipedia
WebMay 14, 2024 · The Biot or the Biot–Willis effective stress coefficient (Biot 1941; Biot and Willis 1957) is an essential geomechanical parameter of compressible and deformable porous rocks defined at a macroscopic scale. WebJun 12, 2024 · Recently, we reviewed about 90 geomechanical lab reports (from different labs, different formations, different producing companies) containing extensive measurements of all different sorts of mechanical rock properties and we could not find even a trace of Biot’s coefficient measurement.
Biot's coefficient wikipedia
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WebRefresher of Biot’s static poroelasticity model Biot’s dynamic poroelastic model from the non-equilibrium filtration theory Low frequency reflections from a plane interface … WebBiot coefficient is an important poroelastic constant that dictates the coupled behavior and relates the magnitude of deformation of rock framework and fluid. Biot coefficient is critical for estimation of in situ minimum horizontal stress. Specs: The experiment requires to flow through the sample by varying the pore pressure and confining ...
WebTheoretically, the Biot coefficient value varying from 0 to 1, but the experimental results suggest that the Biot coefficient ranges from 0.65 to 0.91 for the most reservoir rocks … WebMar 5, 2024 · The Biot number ( Bi) is a dimensionless quantity used in heat transfer calculations, named for the eighteenth-century French physicist Jean-Baptiste Biot (1774–1862). The Biot number is the ratio of the thermal resistance for conduction inside a body to the resistance for convection at the surface of the body.
WebBiot is a small, bowl-shaped lunar impact crater located in the southern reaches of the Mare Fecunditatis.It is named after French astronomer Jean-Baptiste Biot. "Biot … WebA proper correlation of the Biot-Willis coefficient controlling the bulk volumetric strain is developed using the data available from various sources in a manner to meet the required endpoint ...
WebJun 18, 2024 · Biot’s coefficient is the change in fluid volume caused by total volume changes under a drained condition (Müller and Sahay 2016 ). It was proposed by the Biot poroelasticity theory, which was formulated by Biot ( 1941) based on an equilibrium thermodynamics method with the definition of an elastic energy potential.
WebMar 1, 2015 · The mathematic expression of Biot’s effective stress is: \sigma_ {\text {eff}} = \sigma_ {\text {total}} - \alpha \cdot p , (1) where σ eff is the effective stress, MPa; σ total is the total stress, MPa; α is a fraction called Biot’s coefficient, and p is the pore pressure, MPa. The traditional method for measuring Biot’s coefficient ... snipping snipping tool for windows 10The Biot number is defined as: $${\displaystyle \mathrm {Bi} ={\frac {h}{k}}L}$$ where: $${\displaystyle {k}}$$ is the thermal conductivity of the body [W/(m·K)]$${\displaystyle {h}}$$ is a convective heat transfer coefficient [W/(m ·K)]$${\displaystyle {L}}$$ is a characteristic length [m] of the … See more The Biot number (Bi) is a dimensionless quantity used in heat transfer calculations, named for the eighteenth-century French physicist Jean-Baptiste Biot (1774–1862). The Biot number is the ratio of the thermal resistance for … See more • Convection • Fourier number • Heat conduction See more The value of the Biot number can indicate the applicability (or inapplicability) of certain methods of solving transient heat transfer problems. For example, a Biot number smaller … See more An analogous version of the Biot number (usually called the "mass transfer Biot number", or $${\displaystyle \mathrm {Bi} _{m}}$$) is also used in mass diffusion processes: See more snipping hotkey windows 11WebIntroduction. Named after the physicist Jean Baptiste-Biot (1774-1862), the Biot number is a unit-less/dimensionless number used in problems dealing with heat transfer. The Biot number allows for the calculation of a ratio between the heat transfer resistances within a system and the surroundings of the system, as well as its surface. snipping shortcut windowsWebBiot ("BIological robOT"), the name given to an extraterrestrial biological robot in the fictional universe of Arthur C. Clarke 's novel Rendezvous with Rama (1973). Biot, a … snipping shortcut stopped workingWebThe obtained results ( Table 3) show that the Biot coefficient is stress dependent. The Biot coeftlcient go from 0.84 for a vertical stress of 8.75 MPa to 0.42 for a vertical stress equal to... snipping hotkey windows 10WebMay 14, 2024 · The subsurface rock formations may contain predominantly the intragranular matrix porosity in the sedimentary rocks and predominantly the fracture porosity in the … snip pictures from pdfPoroelasticity is a field in materials science and mechanics that studies the interaction between fluid flow and solids deformation within a linear porous medium and it is an extension of elasticity and porous medium flow (diffusion equation). The deformation of the medium influences the flow of the fluid and vice versa. The theory was proposed by Maurice Anthony Biot (1935, 1941) as a theoretical extension of soil consolidation models developed to calculate the settlement of struct… snipping keyboard shortcut