Calibration of the thermo-hydrodynamic model of the Koshelev geothermal system by the Nelder-Mead simplex method

2018 ◽  
Vol 12 (59) ◽  
pp. 187-199
Author(s):  
D.V. Mamaev ◽  
2018 ◽  
Vol 56 ◽  
pp. 01021
Author(s):  
Dmitry Mamaev

The Koshelev geothermal system is located in the southern part of the Kamchatka Peninsula. On the surface, the system manifests itself by steam-hydrotherms at two thermal fields. Estimates of the predicted power from different data sources vary significantly, because the parameters of the coolant at great depths are not currently known and are presumable. Based on the available geological and geophysical data, a numerical threedimensional thermo-hydrodynamic model of the geothermal system has been developed. The model was calibrated according to thermometry data in exploratory wells. The calibrated model adequately describes the distribution of thermo-hydrodynamic parameters of the coolant in the system. It can be used to evaluate the coolant parameters during the development of the thermal resources of the Koshelev geothermal system. In the course of computational experiments, the developed model is used to obtain the distribution of the thermo-hydrodynamic parameters of the hydrothermal coolant in the geothermal system in the natural state and during the development of thermal resources.


Liquidity ◽  
2018 ◽  
Vol 2 (1) ◽  
pp. 59-65 ◽  
Author(s):  
Yanti Budiasih

The purpose of this study are to (1) determine the combination of inputs used in producing products such as beef sausages and veal sausage meatball; and (2) determine the optimal combination whether the product can provide the maximum profit. In order to determine the combination of inputs and maximum benefits can be used linear programming with graphical and simplex method. The valuation result shows that the optimal input combination would give a profit of Rp. 1.115 million per day.


Author(s):  
Salavat Mudarisov ◽  
Ildar Farkhutdinov ◽  
Airat Mukhametdinov ◽  
Raushan Aminov ◽  
Rustam Bagautdinov ◽  
...  

Author(s):  
Qiusheng WANG ◽  
Xiaolan GU ◽  
Yingyi LIU ◽  
Haiwen YUAN

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