Use of Stokes’ Stream Function for Interactive Visualization System of Taylor Vortex Flow | Chapter 1 | Advances and Challenges in Science and Technology Vol. 1

 The facet ratio, which is the percentage of the cylinder time to the space between the cylinders, and the Reynolds number, that is inferred from the inner barrel's velocity, are two together key variables in this study. Taylor's vortices reconcile torses regularly superimposed into the break between false accusation and the bearing. The appearance of whirlpools is linked accompanying the inertia forces generated by false accusation rotation. The behavior of the Taylor whirlpool flow—a mixture of laminar and violent flow patterns—between two concentrically rotating cylinders accompanying a limited axial distance has piqued plenty curiosity.  When mode consequence occurs, quantitative limits such as the book-averaged energy change rapidly. It is main to visualize the behaviors of whirlpools. In this work, a three-dimensional occasion visualization system is grown. This approach allows us to regulate the flow visualization's point of view, admitting us to see the path of a whirlpool from any region. The track of a vortex's center endures the volume-averaged energy bulge. This technique admitted for precise measurement of changes in the principles of physical quantities. The Reynolds number was altered all the while the computation to check the behavior of the volume-averaged strength. The proposed system can help to interrogate the relationship betwixt the mode bifurcation process and the capacity-averaged energy.

Author(s) Details:

Hiroyuki Furukawa,
Department of Mechanical Engineering, Meijo University, Nagoya, Japan.

Please see the link here: https://stm.bookpi.org/ACST-V1/article/view/11858

Study about Optimization in Helical Grooved Tubes for Heat Transfer Enhancement Using Interdisciplinary Techniques | Chapter 7 | Research and Developments in Engineering Research Vol. 6

 In this branch, the thermal augmentation factor is examined numerically established D-optimal design and therefore the entropy study is done on the optimized arithmetic. Optimization is now a repeatedly used tool in manufacturing design. Under a certain set of variables and restraints, optimization is normally done by defining a function of an profit variable and with determining allure maximum or minimum or say, the optimized point. Efforts are in preparation to enhance the central tube, covering, or plate design in heat exchangers as well, where much study is being accomplished to maximise efficiency. The surface bettering has been energetically investigated in this regard in current decades. This sort of improving is usually dominant on television set side. In this paper, with the growth in view, the design is established interdisciplinary fields. That is, first a numerical study is acted on the helically grooved tubes to analyze the thermal augmentation factor. By comparing the deterioration-generation rates of the smooth and cut tubes, this analysis was transported. The optimum Reynolds number for that tube is the individual at which hostile entropy-production-rate is reached. Numerical results are initially legitimized with written experimental results. The chosen optimised hose is next subjected to an deterioration minimization study including the Reynolds number based on the D-optimum design for the thermal augmentation factor. The tube that has ultimate grooves, the most depth, and the minimal pitch exhibits the best depiction.  However, the optimum Reynolds number is at the point place the tube has the least deterioration generated as distinguished to the smooth tube.

Author(s) Details:

Shamoon Jamshed,
Pakistan Navy Engineering College, Karachi, Pakistan.

Please see the link here: https://stm.bookpi.org/RADER-V6/article/view/11555

Ideal Flow Solution Comparison over a 90-Degree Angle Point Using CVBEM and FEM | Chapter 13 | Fundamental Research and Application of Physical Science Vol. 6

 Complex Variable Boundary Element Method (CVBEM) is an arising numerical approach for simulating flow questions, containing groundwater flows. Benchmarking the solution from CVBEM accompanying other settled approaches, like the Finite Volume Methodologies (FVM), will reveal its dependability. In this work, the flow fields from the CVBEM and FVM are compared for an ideal flow over a 90-scope angle point. The corresponding focuses on the flow vector’s magnitude and route. This test question was chosen to reveal the reliability of CVBEM for groundwater flow uses. The close concurrence between two together results underscores the veracity of the CVBEM resolution.

Author(s) Details:

Colin Bloor,
Hromadka & Associates, Rancho Santa Margarita, USA.

Theodore V. Hromadka II,
Department of Mathematical Sciences, United States Military Academy, West Point, New York, USA.

Bryce Wilkins,
Department of Mathematical Sciences, United States Military Academy, West Point, New York, USA.

Howard McInvale,
Department of Mathematical Sciences, United States Military Academy, West Point, New York, USA.

Please see the link here: https://stm.bookpi.org/FRAPS-V6/article/view/10839

Simulation of Heat Transfer in a Charcoal Soybean Roaster Using Computational Fluid Dynamics: A Recent Approach| Chapter 4 | Recent Progress in Science and Technology Vol. 2

 A deeper understanding of heat transfer in the charcoal soybean grill for cookout is necessary likely Uganda's rising strength costs and the demand for high-quality roasted soybean. In this study, computational fluid dynamics was used to model heat transfer in the black soybean roaster (CFD). When soybeans are roasted at the wrong hotnesses, vital digestive components from the source are lost, in addition to significant strength losses, which raises the cost of result. In this investigation, the heat transfer process in a black soybean roaster was fake using CFD. Simulations were completed activity using Solid Edge® ST9, a simultaneous Technology software grown by Siemens Product Lifecycle Management (PLM). The temperature of the roasting beat was observed expected higher at the lower end of the beat compared to the top. The hotness at the bottom of the beat ranges between 420ºC and 590ºC. Temperature is chief at the center of the drum and reduces towards the extreme ends of the drum. The results signify that the distance between the beat and the stove influences the temperature of the beat. The average drum hotness is observed to increase accompanying a reduction in distance of separation 'tween the drum and black stove. CFD was favorably used to simulate the heat transfer wonder in the charcoal soybean grill for cookout. It is necessary to lessen the charcoal roasting vehicle by including a means for adjusting the distance betwixt the roasting beat and the charcoal range because the hotness of the drum significantly depends on the distance middle from two points the drum and the black stove. This will manage possible to manage the drum hotnesses in a way that counters the soybeans from being overcooked and from burning, with minimising nutrient loss. The regulating mechanism will likewise guarantee that the charcoal soybean container for cooking food is used efficiently.

Author(s) Details:

J. Kigozi,
Department of Agricultural and Bio-systems Engineering, Makerere University, P.O.Box 7062, Kampala, Uganda.

D. Akatukunda,
Department of Agricultural and Bio-systems Engineering, Makerere University, P.O.Box 7062, Kampala, Uganda.

E. Baidhe,
Department of Agricultural and Bio-systems Engineering, Makerere University, P.O.Box 7062, Kampala, Uganda.

I. Oluk,
Department of Agricultural and Bio-systems Engineering, Makerere University, P.O.Box 7062, Kampala, Uganda.

F. Okori,
Department of Agricultural and Bio-systems Engineering, Makerere University, P.O.Box 7062, Kampala, Uganda.

Please see the link here: https://stm.bookpi.org/RPST-V2/article/view/9235

Energy, Exergy, Economic, Environmental and Computational fluid Dynamics (CFD) Assessment of a Very Small Incinerator Combined with a Heating System: An Advanced Study| Chapter 14 | New Visions in Science and Technology Vol. 2

 This study proposes a very compact incinerator that also produces heat (VICH). The goal of this work is to design, model, test, and assess a novel VICH system using computational fluid dynamics (CFD), energy, economic, environmental, and exergy (4E-CFD) methodologies. The findings of the CFD analysis utilising three hot fluids—hot water, steam, and hot oil—suggested that hot water was the optimal working fluid for integration with an organic Rankine cycle at a temperature of 116.57 °C (ORC). Furthermore, the testing findings indicated that a refusederived fuel (RDF) with a low heating value of 16.62 MJ/kg could raise the hot water temperature to 111.18 °C, which was consistent with the CFD modelling result. The efficiency for energy and exergy were roughly 23.35 percent and 20.93 percent, respectively. A life cycle assessment (LCA) using a functional unit of 1 kgRDF-1 and a lifespan of 20 years found a climate change of 3.30E-03 kg CO2 eq, ozone depletion of 1.52E-10 kg CFC-11 eq, particulate matter formation of 8.36E-06 kg PM10 eq, terrestrial acidification of 1.30E-05 kg SO2 eq, freshwater eutrophication of 1.83E-06 kg P Construction accounted for 36.07 percent of the LCA impacts, followed by operations at 63.41 percent, landfill decommissioning at 0.52 percent, and recycling at 3.99 percent. The levelized cost of the waste disposal combined heating procedure was roughly 0.006 USD/kgRDF in the economic figures.

Author (S) Details

Nattaporn Chaiyat
School of Renewable Energy, Maejo University, Chiang Mai, 50290, Thailand and Thermal Design and Technology Laboratory (TDeT Lab), Thailand and Excellence Center on Environmental Friendly Smart Agriculture and Renewable Energy Technology (ECoT), Thailand.


Chaithawat Kaewmueang
School of Renewable Energy, Maejo University, Chiang Mai, 50290, Thailand and Thermal Design and Technology Laboratory (TDeT Lab), Thailand.


View Book :- https://stm.bookpi.org/NVST-V2/article/view/3451

Numerical and Experimental Investigation of Wind Load on Photovoltaic Panel Assemblies | Chapter 7 | Current Approaches in Science and Technology Research Vol. 4

 The aerodynamic research of solar panel assemblies and the determination of wind load are presented in this chapter. The task is solved in the first phase using a 1:1 computer simulation of the wind flow around the suggested rectangular assembly using the FLUENT ANSYS programme, followed by experimental measurements in the wind tunnel with a boundary layer (BLWT) in Bratislava. The solution's goal was to figure out the maximum pressure and suction wind loads on the top and bottom surfaces of panels. The greatest local pressure in each panel row as maximum values from all wind directions is represented by the resulting net pressure coefficient. The experimentally determined net pressure coefficient values were compared to computer simulations and processes described in STN EN 1991-1-4. It is clear that the inner panels are loaded far less than the norm requires. The panels on the side of the assembly or along the aisle's edge are loaded substantially higher than the norm allows. In addition, frontal panels are less wind-stressed than the norm specifies.

Author(s) Details

Ol'ga Hubová
Slovak University of Technology, 810 05 Bratislava, Slovakia.

Michal Franek
Slovak University of Technology, 810 05 Bratislava, Slovakia.

Marek Macák
Slovak University of Technology, 810 05 Bratislava, Slovakia.

View Book :- https://stm.bookpi.org/CASTR-V4/article/view/1041

Reporting a Case Study on Computational Fluid Dynamics (CFD) Modelling to Estimate Fluvial Bank Erosion | Chapter 2 | Modern Advances in Geography, Environment and Earth Sciences Vol. 1

 Models of river bank erosion are an important prerequisite for understanding the creation of river meanders and for estimating the possible loss of land and the potential risk to infrastructure in the floodplain. While bank erosion models considering large-scale mass collapse have been established, the contribution of fluvial erosion (the particle-by-particle erosion mechanism due to the shear action of the river flow) to bank retreat has not received as much attention. In theory, these rates of fluvial bank erosion can be quantified using formulations of excess shear stress, but it has proven difficult in practise to estimate the parameters involved. In this research, a series of three-dimensional Computational Fluid Dynamics ( CFD) simulations were performed at Bridport in southern England for a meander loop on the River Asker (200 m long) in order to elucidate the overall flow structures and in particular to provide estimates of the fluid shear stress applied to the riverbanks. The models for the CFD, Discharge flow varies. At maximum bank, the velocity levels and simulated shear stresses inside the separation zones of the inner bank are shown to be higher than those observed under low flow conditions, and these elevated shear stresses may be necessary to extract accumulated sediments into the main downstream flow. Spread and combine regions of higher bed / bank shear stress, while recirculation regions and areas of relatively small bed / bank shear stress decrease in magnitude. Compared to those simulated at low flow, the degree of velocity and shear stresses over the areas of inner bank separation was found to be greater at high flow, and may be sufficient to prevent sediment movement into the main downstream flow. These modelled flow patterns have implications for the dynamics of sediments, bank erosion and migration of meanders in the range studied.

Author (s) Details

Emmanouil Spyropoulos
Saudi Aramco, Dhahran, Kingdom of Saudi Arabia.

Professor Stephen E. Darby
School of Geography and Environmental Sciences, University of Southampton, Southampton, United Kingdom.


View Book :-  https://bp.bookpi.org/index.php/bpi/catalog/book/305