scholarly journals A numerical analysis of the thermohydraulics of an EGS project in Turkey

2018 ◽  
Vol 240 ◽  
pp. 05001
Author(s):  
Ali Cemal Benim ◽  
Aydin Cicek ◽  
Arif Mert Eker
Keyword(s):  
Porous Media ◽  
Numerical Model ◽  
Numerical Solutions ◽  
Numerical Study ◽  
Domain Size ◽  
Geothermal System ◽  
Enhanced Geothermal System ◽  
Discretization Scheme ◽  
Modelling Assumptions ◽  
System Project

A numerical study of the thermohydraulics of an enhanced geothermal system project in Turkey is presented. The solid structures are modelled as porous media, using the numerically determined hydraulic fracturing data of other authors. The influence of several numerical modelling aspects such as the domain size, grid resolution, temporal resolution as well as the discretization scheme are investigated and assessed to obtain highly accurate numerical solutions under the applied modelling assumptions. Using the suggested mathematical and numerical model, different production scenarios are investigated.

Fluid Flow and Lateral Fluid Dispersion in Bounded Granular Beds

2002 ◽  
Author(s):  
Azita Soleymani ◽  
Eveliina Takasuo ◽  
Piroz Zamankhan ◽  
William Polashenski
Keyword(s):  
Reynolds Number ◽  
Porous Media ◽  
Numerical Solutions ◽  
Stokes Equations ◽  
Numerical Study ◽  
Fluid Velocity ◽  
Three Dimensional ◽  
Numerical Results ◽  
Transition To Turbulence ◽  
Wide Range

Results are presented from a numerical study examining the flow of a viscous, incompressible fluid through random packing of nonoverlapping spheres at moderate Reynolds numbers (based on pore permeability and interstitial fluid velocity), spanning a wide range of flow conditions for porous media. By using a laminar model including inertial terms and assuming rough walls, numerical solutions of the Navier-Stokes equations in three-dimensional porous packed beds resulted in dimensionless pressure drops in excellent agreement with those reported in a previous study (Fand et al., 1987). This observation suggests that no transition to turbulence could occur in the range of Reynolds number studied. For flows in the Forchheimer regime, numerical results are presented of the lateral dispersivity of solute continuously injected into a three-dimensional bounded granular bed at moderate Peclet numbers. Lateral fluid dispersion coefficients are calculated by comparing the concentration profiles obtained from numerical and analytical methods. Comparing the present numerical results with data available in the literature, no evidence has been found to support the speculations by others for a transition from laminar to turbulent regimes in porous media at a critical Reynolds number.

The deep EGS (Enhanced Geothermal System) project at Soultz-sous-Forêts (Alsace, France)

Geothermics ◽  
2006 ◽  
Vol 35 (5-6) ◽  
pp. 473-483 ◽  
Author(s):  
André Gérard ◽  
Albert Genter ◽  
Thomas Kohl ◽  
Philippe Lutz ◽  
Peter Rose ◽  
...  
Keyword(s):  
Geothermal System ◽  
Enhanced Geothermal System ◽  
System Project

Magnetotelluric monitoring of permeability enhancement at enhanced geothermal system project

Geothermics ◽  
2017 ◽  
Vol 66 ◽  
pp. 23-38 ◽  
Author(s):  
Yohannes Lemma Didana ◽  
Graham Heinson ◽  
Stephan Thiel ◽  
Lars Krieger
Keyword(s):  
Geothermal System ◽  
Enhanced Geothermal System ◽  
Permeability Enhancement ◽  
System Project

Numerical study on heat extraction performance of multistage fracturing Enhanced Geothermal System

2020 ◽  
Vol 149 ◽  
pp. 1214-1226 ◽  
Author(s):  
Songcai Han ◽  
Yuanfang Cheng ◽  
Qi Gao ◽  
Chuanliang Yan ◽  
Jincheng Zhang
Keyword(s):  
Numerical Study ◽  
Heat Extraction ◽  
Geothermal System ◽  
Enhanced Geothermal System ◽  
Extraction Performance
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