ICONE Competition - ICONE28-POWER2020-16234: Simulations of Experiments on Isothermal Containment Atmosphere Mixing Caused by Vertical Injection

2021 ◽  
Author(s):  
Rajinder Khurmi
Keyword(s):  
Vertical Injection

Influence of Injection Type and Feed Arrangement on Flow and Heat Transfer in an Injection Slot

2001 ◽  
Vol 124 (1) ◽  
pp. 132-141 ◽  
Author(s):  
Hyung Hee Cho ◽  
Jin Ki Ham
Keyword(s):  
Mass Transfer ◽  
Heat Mass Transfer ◽  
Cooling System ◽  
Transfer Coefficients ◽  
Counter Flow ◽  
Flow Paths ◽  
Mass Transfer Coefficients ◽  
Naphthalene Sublimation Technique ◽  
Vertical Injection ◽  
Injection Type

An experimental investigation is conducted to improve a slot film cooling system used for the cooling of a gas turbine combustor liner. The tangential slots are constructed of discrete holes with different injection types which are the parallel, vertical, and combined to the slot lip. The investigation is focused on the coolant supply systems of normal, inline, and counter-flow paths to the mainstream flow direction. A naphthalene sublimation technique has been employed to measure the local heat/mass transfer coefficients in a slot wall with various injection types and coolant feeding directions. A numerical simulation is also conducted to help understand the flow patterns inside the slot for different injection types. The velocity distributions at the exit of slot lip for the parallel and vertical injection types are fairly uniform with mild periodical patterns with respect to the injection hole positions. However, the combined injection type increases the nonuniformity of flow distribution with the period equaling twice that of hole-to-hole pitch due to splitting and merging of the ejected flows. The dimensionless temperature distributions at the slot exits differ little with blowing rates, injection types, and secondary flow conditions. In the results of heat/mass transfer measurements, the best cooling performance inside the slot is obtained with the vertical injection type among the three different injection types due to the effects of jet impingement. The lateral distributions of heat/mass transfer coefficients with the inline and counter-flow paths are more uniform than the normal-flow path. The average heat/mass transfer coefficients with the injection holes are about two to five times higher than that of a smooth two-dimensional slot path.

scholarly journals Application of the Discontinuous Galerkin Method to the Study of the Dynamics of Temperature and Pressure Changes in a Formation with an Injection Well and a Hydraulic Fracture

2021 ◽  
Vol 31 (1) ◽  
pp. 161-174
Author(s):  
Ruslan V. Zhalnin ◽  
Victor F. Masyagin ◽  
Elizaveta E. Peskova ◽  
Vladimir F. Tishkin
Keyword(s):  
Temperature Distribution ◽  
Galerkin Method ◽  
Discontinuous Galerkin ◽  
Discontinuous Galerkin Method ◽  
Numerical Algorithm ◽  
Hydraulic Fracture ◽  
Injection Well ◽  
Triangular Grid ◽  
Vertical Injection ◽  
Temperature And Pressure

Introduction. In this article, the problem of temperature distribution in an oil-bearing formation with a hydraulic fracture and a vertical injection well is numerically modeled. Materials and Methods. To describe the process of temperature distribution in the formation under the action of the fluid injected into the formation, the Fourier-Kirchhoff equation of convective heat transfer is used. To solve this equation, the discontinuous Galerkin method on staggered unstructured grids is used. To describe the process of pressure change in the formation under the action of the injection well, an equation is used that is obtained based on the continuity equation and Darcy’s law. To solve it, the discontinuous Galerkin method on an unstructured triangular grid is used. To parallelize the numerical algorithm, the MPI library is used. Results. The article presents a numerical algorithm and the results of modeling the dynamics of the temperature fields in an oil reservoir with a hydraulic fracture and a vertical injection well. Discussion and Conclusion. A numerical algorithm based on the discontinuous Galerkin method for math modeling of the temperature and pressure fields in a oil-bearing formation with a hydraulic fracture and injection well was developed and implemented. The results obtained for the distribution of temperature and pressure in the fracture are adequate and in good agreement with the specified initial-boundary conditions. Further work in this direction involves modeling on tetrahedral unstructured meshes for a more accurate study of the ongoing processes.

scholarly journals A multidisciplinary study of a geothermal reservoir below Thisted, Denmark

1969 ◽  
Vol 33 ◽  
pp. 51-54
Author(s):  
Morten Leth Hjuler ◽  
Henrik V ◽  
Carsten Møller Nielsen ◽  
Peter Frykman ◽  
Lars Kristensen ◽  
...  
Keyword(s):  
District Heating ◽  
Hot Water ◽  
Late Triassic ◽  
Production Well ◽  
Multidisciplinary Study ◽  
Water Surface Temperature ◽  
Vertical Injection ◽  
Water Formation ◽  
The Town ◽  
Geothermal Plant

The first geothermal plant in Denmark was established in 1984 near the town of Thisted (Fig. 1). For nearly 30 years the plant has successfully produced c. 43°C hot water (surface temperature) from a highly permeable sandstone reservoir in the Late Triassic to Early Jurassic Gassum Formation and used the heat from the geothermal water for district heating. The 45°C hot water (formation temperature) is pumped up from a vertical production well, Thisted-2, from a depth of c. 1250 m and the cooled water (c. 12°C) is re-injected into the formation through a vertical injection well, Thisted-3, located 1.5 km east of the production well.

Temperature monitoring during a water-injection test using a vertical well in a newly filled MSW layer of a landfill

2019 ◽  
Vol 37 (5) ◽  
pp. 530-541 ◽  
Author(s):  
Tao Zhang ◽  
Jianyong Shi ◽  
Xuede Qian ◽  
Yingbo Ai
Keyword(s):  
Landfill Gas ◽  
Water Injection ◽  
Significant Rise ◽  
Gas Pressure ◽  
Injection Well ◽  
Bottom Temperature ◽  
Vertical Well ◽  
Vertical Injection ◽  
Leachate Level ◽  
Range Of Influence

High temperature may adversely affect municipal solid waste (MSW) biodegradation and lead to an increase in the deformation of high-density polyethylene (HDPE) pipes used for the collection of leachate and landfill gas in landfills. The test in this study was to change the waste temperature around the vertical injection well by water injection using a vertical well. The test was conducted intermittently with two different flowrates in a newly filled MSW layer of a landfill. The temperature, gas pressure and leachate level in the test area were simultaneously monitored during this study. The results showed that the waste temperature around the vertical injection well was effectively changed by water injection, which did not result in a significant rise in the leachate level. During water injection, the waste temperature influence distance in the horizontal direction increased with depth from the leachate level to the bottom of the injection well. The bottom temperature of the injection well decreased to near the water-injection temperature. The range of influence of the waste temperature caused by intermittent water injections slightly increased in this test. After water injection was stopped, the waste temperature near the vertical injection well increased quickly initially, and then the increments became more gradual with time. When the leachate level recovered stably, there was still a temperature gradient around the injection well within the range of influence. The temperature and gas pressure in the waste above the leachate level and far away from the injection well were slightly influenced by water injection.

Vertical injection logic

1975 ◽  
Author(s):  
T. Nakano ◽  
Y. Horiba ◽  
A. Yasuoka ◽  
O. Tomisawa ◽  
K. Murakami ◽  
...  
Keyword(s):  
Vertical Injection

Light-extraction enhancement of vertical-injection GaN-based light-emitting diodes fabricated with highly integrated surface textures

2008 ◽  
Vol 33 (11) ◽  
pp. 1273 ◽  
Author(s):  
H. Kim ◽  
K.-K. Choi ◽  
K.-K. Kim ◽  
J. Cho ◽  
S.-N. Lee ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Light Extraction ◽  
Light Emitting ◽  
Surface Textures ◽  
Vertical Injection
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