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Online since: February 2026
Authors: Ruslan Sabah Abdulrahman, Farah Abdalsalam Ibrahim, Safaa H. Faisal, Tahseen A. Jabbar
As shown in Fig. 3, the comparison demonstrates excellent agreement between the present results and the published data across the evaluated domain.
Notably, near the boundary region asx/L→0.25 (where the temperature gradient becomes steep) the results from the present work align almost exactly with those of the reference data, capturing the expected rapid thermal transition adjacent to the heated surface.
However, despite the larger heating surface area, the isotherms near the top vertex begin to flatten, suggesting a reduction in convective efficiency due to spatial confinement.
The detected trend shows a reduction in Nu*as D increases from 0.1 to 0.5.
This will reduce the buoyancy driven transfer mechanism and leading to a reduction in the convective heat transfer efficiency.
Notably, near the boundary region asx/L→0.25 (where the temperature gradient becomes steep) the results from the present work align almost exactly with those of the reference data, capturing the expected rapid thermal transition adjacent to the heated surface.
However, despite the larger heating surface area, the isotherms near the top vertex begin to flatten, suggesting a reduction in convective efficiency due to spatial confinement.
The detected trend shows a reduction in Nu*as D increases from 0.1 to 0.5.
This will reduce the buoyancy driven transfer mechanism and leading to a reduction in the convective heat transfer efficiency.
Online since: December 2014
Authors: Jin Yang Xie, Lin Sun, Fa Yang Jin, Song He, Wan Fen Pu
A number of studies on foam quality have shown that foam exhibits mobility reduction properties where the foam quality is rated between 45% and 95% (Blauer,1974 [14]; Schramm,1994 [15]; Chang, 1998 [16]), which means the gas liquid ratio is between 0.9:1.1 and 19:1.
Gas and liquid injection rates define the quality of the foam formed (i.e. ratio of gas rate to total injection rate), which will also impact its mobility reduction characteristics(Schramm, 1994a [20]; Chang, 1999[21]).
Experimental process below is set up, theequipment include: constant temperature oven, inner diameter of which is 70cm×75cm×123cm, upper limit of temperature is 180℃, with pressure sensors, data is automatically collected into a computer.A constant flow pump provides stable flow of 0~40ml/min.
A computer data acquisition system.
How Can Selective Mobility Reduction of CO2-Foam Assist in Reservoir Floods.
Gas and liquid injection rates define the quality of the foam formed (i.e. ratio of gas rate to total injection rate), which will also impact its mobility reduction characteristics(Schramm, 1994a [20]; Chang, 1999[21]).
Experimental process below is set up, theequipment include: constant temperature oven, inner diameter of which is 70cm×75cm×123cm, upper limit of temperature is 180℃, with pressure sensors, data is automatically collected into a computer.A constant flow pump provides stable flow of 0~40ml/min.
A computer data acquisition system.
How Can Selective Mobility Reduction of CO2-Foam Assist in Reservoir Floods.
Online since: January 2024
Authors: Diakanua Nkazi, Josias van der Merwe, Januario Da Costa Hossi, Kevin Harding
This study develops a model for reduction of exhaust gas outputs and the power management of internal combustion engines vis-à-vis the effects of varying the air to N2 intake ratios.
The model was based on empirical thermodynamic equations and thermodynamic data including the chemical equilibrium laws.
The enthalpies of selected substances are widely available in the thermodynamic data.
The reduction of NO and CO in the exhaust is an important environmental gain in terms of pollutants emission.
Thus, the exclusion of N2 from combustion feed air permanently remains an avenue to explore further reduction of volume of the feed materials required by the engine to perform work.
The model was based on empirical thermodynamic equations and thermodynamic data including the chemical equilibrium laws.
The enthalpies of selected substances are widely available in the thermodynamic data.
The reduction of NO and CO in the exhaust is an important environmental gain in terms of pollutants emission.
Thus, the exclusion of N2 from combustion feed air permanently remains an avenue to explore further reduction of volume of the feed materials required by the engine to perform work.
Online since: October 2011
Authors: Wei Hua Zhang, Jia Mao, Yu Feng Chen
As shown in Fig.6, this frame is the basis for data management and process control, and also for the optimization method developed later.
Data points with ‘’ symbol denote general buckling modes, data points with ‘’ symbol denote local buckling modes, and data point with a ‘’ symbol denote the optimal design point.
The unitary form of mass results (0.01251t) under =1.5, (,) =(50,7) is taken in order to describe the varying traits of data points better.
It could be seen from the data points that: the optimal skin thickness and area ratio increases/decreases with increasing under fixed numbers of ribs, and smaller mass could be obtained.
The extent for mass reduction decreases when is larger than 4.5.
Data points with ‘’ symbol denote general buckling modes, data points with ‘’ symbol denote local buckling modes, and data point with a ‘’ symbol denote the optimal design point.
The unitary form of mass results (0.01251t) under =1.5, (,) =(50,7) is taken in order to describe the varying traits of data points better.
It could be seen from the data points that: the optimal skin thickness and area ratio increases/decreases with increasing under fixed numbers of ribs, and smaller mass could be obtained.
The extent for mass reduction decreases when is larger than 4.5.
Online since: August 2023
Authors: Rossen Radev, Danail Gospodinov, Ivo Draganov, Nikolay Ferdinandov
Instrument and fixture
A thermocouple is welded in the area of the pin and connected to a Bluetooth transmitter, which feeds the data to a laptop - Fig. 4.
These data were used to construct a temperature variation diagram for a point on the weldment in contact with the center of the pin.
This characteristic peak was used to compare the experimentally obtained data and the results obtained by finite element models.
Using the mass scaling factor allows a reduction in CPU time.
Nevertheless, some inertia exists and the comparability of experimental data with those obtained by simulation is debatable.
These data were used to construct a temperature variation diagram for a point on the weldment in contact with the center of the pin.
This characteristic peak was used to compare the experimentally obtained data and the results obtained by finite element models.
Using the mass scaling factor allows a reduction in CPU time.
Nevertheless, some inertia exists and the comparability of experimental data with those obtained by simulation is debatable.
Online since: February 2025
Authors: Agustinus Andri Tobi, Simon Patabang, Jeremias Leda
The design analysis results include data on the capacity of each PLTS component, which will be used to build the PLTS system according to the power requirements of the water pump.
pout= Pin×efficiency % (14) Where: Pout : Inverter output (W) Pin : Inverter input (W) Effisiensi : Inverter efficiency (%) Data Analysis 1.
Load The load specification data used in the design of the photovoltaic water pump system at Stella Maris Hospital Makassar is shown in Table 1.
Solar Radiation Irradiance data collection at Stella Maris Hospital Makassar with Latitude -5.147 / Longitude 119.403, with irradiance data obtained from NASA POWER for the year of 2022.
[8] POWER | Data Access Viewer (https://power.larc.nasa.gov/data-access-viewer/)
pout= Pin×efficiency % (14) Where: Pout : Inverter output (W) Pin : Inverter input (W) Effisiensi : Inverter efficiency (%) Data Analysis 1.
Load The load specification data used in the design of the photovoltaic water pump system at Stella Maris Hospital Makassar is shown in Table 1.
Solar Radiation Irradiance data collection at Stella Maris Hospital Makassar with Latitude -5.147 / Longitude 119.403, with irradiance data obtained from NASA POWER for the year of 2022.
[8] POWER | Data Access Viewer (https://power.larc.nasa.gov/data-access-viewer/)
Online since: March 2007
Authors: Chad W. Sinclair, J.D. Mithieux, Henry Proudhon
Both twinning and strain induced phases transformations are impeded by
grain size reduction [4, 5].
The resulting tensile data has been differentiated numerically by means of a piecewise polynomial fitting to obtain the work hardening rate.
A good fit to the experimental data was found when m was taken to be linearly dependent on 1/ √D.
Fig. 5 illustrates the results of nonlinear programming used to obtain an optimal set of parameters for matching the experimental data (Fig. 2).
An implementation of a Kocks-Estrin-Mecking model incorporating twinning, previously developed by Bouaziz and Guelton [6] was applied to this system giving a good fit to the experimental work hardening data (beyond yield).
The resulting tensile data has been differentiated numerically by means of a piecewise polynomial fitting to obtain the work hardening rate.
A good fit to the experimental data was found when m was taken to be linearly dependent on 1/ √D.
Fig. 5 illustrates the results of nonlinear programming used to obtain an optimal set of parameters for matching the experimental data (Fig. 2).
An implementation of a Kocks-Estrin-Mecking model incorporating twinning, previously developed by Bouaziz and Guelton [6] was applied to this system giving a good fit to the experimental work hardening data (beyond yield).
Online since: January 2014
Authors: Li Lin, Ting Ting Lv
Mechanical characteristics of the vehicle collision accident
Automotive collision process is very short, shorter real collision forces, usually between 70ms to 120ms; Car collisions can be approximated as an elastic-plastic collision and collision car as a rigid body[2], Auto collision, suffering from shock and damage; Two cars of the same model with the same speed frontal collision with a car at the same speed collision is equivalent to fixed shield; Collision causes of speed reduction is the major cause of injury[3].
Table 1.The Fitting Formula Of Before, During And After The Experimental Results Status of the crashed car Calculated data Data unit Fitting formula Driving state Total damage length L m Total damage area A m2 Total damage volume V m3 Static state Total damage length L m Total damage area A m2 Total damage volume V m3 Front collision due to friction of the role of the Department-nose deformation Bent nose-distortion x m Oblique impact Frontal and rear crash can be treated as a linear collision of hearts, in theory can be solved.
Vertical collision have some experimental data, you can do some kind of analogy analysis[7].
However, the oblique impact has little experimental data, validation of the theory and practice are not fully[8].
Establishment of Procedural framework By obtaining all parameters users input, each parameter is converted to a float data type, define the double type v (v1, v2) on behalf of the speed values to be drawn, use the equation for the speed of c # syntax to build, cars and car rear-end collision types, for example, The typical traffic accident patterns in the technical identification of vehicle speed gives the following formula: (4) (5) Using the appropriate equation for the C# function to build the C# statement is: (6) (7) Secondly, displaying the calculation result, unless the parameter input values, results are not displayed and vice versa if the all parameter values have been entered, then the speed values of double type are v (v1, v2) converted to a float type and keep only two decimal places, and then directly label to display the value of the label, the corresponding C# statements is: label31.Text = "" + ((float)((int)(v1
Table 1.The Fitting Formula Of Before, During And After The Experimental Results Status of the crashed car Calculated data Data unit Fitting formula Driving state Total damage length L m Total damage area A m2 Total damage volume V m3 Static state Total damage length L m Total damage area A m2 Total damage volume V m3 Front collision due to friction of the role of the Department-nose deformation Bent nose-distortion x m Oblique impact Frontal and rear crash can be treated as a linear collision of hearts, in theory can be solved.
Vertical collision have some experimental data, you can do some kind of analogy analysis[7].
However, the oblique impact has little experimental data, validation of the theory and practice are not fully[8].
Establishment of Procedural framework By obtaining all parameters users input, each parameter is converted to a float data type, define the double type v (v1, v2) on behalf of the speed values to be drawn, use the equation for the speed of c # syntax to build, cars and car rear-end collision types, for example, The typical traffic accident patterns in the technical identification of vehicle speed gives the following formula: (4) (5) Using the appropriate equation for the C# function to build the C# statement is: (6) (7) Secondly, displaying the calculation result, unless the parameter input values, results are not displayed and vice versa if the all parameter values have been entered, then the speed values of double type are v (v1, v2) converted to a float type and keep only two decimal places, and then directly label to display the value of the label, the corresponding C# statements is: label31.Text = "" + ((float)((int)(v1
Online since: September 2012
Authors: Rui Shan Sun, Le Ping Yuan
Yu studied the mechanism of data sharing in such system by using XML [5].
Description of Data.
As a specific kind of application of C/S architecture, B/S architecture is made up of browser, server and database, which allows application program for user separate from code of operation logic and figuring data by introducing a group of operation objects.
Thus user is only responsible for showing the final data, having nothing to do with all other complexity hidden behind operation objects [7].
Guan: Research on Data Sharing and Exchange for Information Management System.
Description of Data.
As a specific kind of application of C/S architecture, B/S architecture is made up of browser, server and database, which allows application program for user separate from code of operation logic and figuring data by introducing a group of operation objects.
Thus user is only responsible for showing the final data, having nothing to do with all other complexity hidden behind operation objects [7].
Guan: Research on Data Sharing and Exchange for Information Management System.
Online since: January 2013
Authors: Lian Fa Yang, Hui Jie Jia, Chun Lei Wu
When n is assigned, both the bulge height and wall thickness reduction decrease with K increasing.
Then the K and n values are achieved by the experimental data from the tensile test.
In addition, the width of weld and HAZ cannot be measured accurately, so the microhardness test and data solving can cause error.
The results had demonstrated that the deformation data were favorable for high accuracy of this approach.
The data from THF are more accurate than that from tensile test since the data are under actual stress state.
Then the K and n values are achieved by the experimental data from the tensile test.
In addition, the width of weld and HAZ cannot be measured accurately, so the microhardness test and data solving can cause error.
The results had demonstrated that the deformation data were favorable for high accuracy of this approach.
The data from THF are more accurate than that from tensile test since the data are under actual stress state.