The paper discusses the application of an air to air Phase Change Material heat-exchanger for passive heating and cooling of a transparent building. The performance of the design is evaluated, analysed by measurements and can be predicted by combining different calculation methods.
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R. Selvam1,*, L. Ganesh Babu2, Joji Thomas3, R. Prakash1, T. Karthikeyan1, T. Maridurai4
FDMP-Fluid Dynamics & Materials Processing, Vol.19, No.3, pp. 569-577, 2023, DOI:10.32604/fdmp.2022.022187
（This article belongs to this Special Issue: Advances in Fluid Dynamics and Functional Materials)
Abstract Hybrid materials collected from organic and inorganic sources, which are traditionally used as brake lining materials, generally include fly ash, cashew shell powder, phenolic resins, aluminium wool, barites, lime powder, carbon powder and copper powder. The present research focuses on the specific effects produced by fly ash and aims to provide useful indications for the replacement of asbestos due to the health hazards caused by the related fibers. Furthermore, the financial implications related to the use of large-volume use of fly ash, lime stone and cashew shell powder, readily available in most countries in the world, are also discussed. It… More >
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Hao Qiu1, Yi Wu1, Min Wen1, Xuesong Xing1, Zening Hou1, Nan Ma1, Zizhen Zhang2, Rui Zhang2,*
FDMP-Fluid Dynamics & Materials Processing, Vol.19, No.3, pp. 579-592, 2023, DOI:10.32604/fdmp.2022.020297
（This article belongs to this Special Issue: Dynamics and Materials Processing in Petroleum Engineering)
Abstract Sand production is a critical issue during the development of offshore oil and gas fields. Certain gas fields (e.g. the AB gas field) have high porosity and high permeability, and with water at the bottom of the reservoir, the risk of sand production greatly increases at high differential pressures. Based on reservoir properties, geological conditions, production requirements, and well logging data, in this study an ultrasonic time difference method, a B index method, and a S index method are used together with a model of rock mass failure (accounting for water influx and pressure depletion) to qualitatively predict sand production.… More >
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Antonio Mariani, Davide Laiso, Biagio Morrone*, Andrea Unich
FDMP-Fluid Dynamics & Materials Processing, Vol.19, No.3, pp. 593-601, 2023, DOI:10.32604/fdmp.2022.022524
（This article belongs to this Special Issue: Materials and Energy an Updated Image for 2021)
Abstract Waste heat recovery is one of the possible solutions to improve the efficiency of internal combustion engines. Instead of wasting the exhaust stream of an energy conversion system into the environment, its residual energy content can be usefully recovered, for example in Organic Rankine Cycles (ORC). This technology has been largely consolidated in stationary power plants but not yet for mobile applications, such as road transport, due to the limitations in the layout and to the constraints on the size and weight of the ORC system. An ORC system installed on the exhaust line of a bus powered by a… More >
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Dapeng Zhang1, Bowen Zhao2,*, Keqiang Zhu3
FDMP-Fluid Dynamics & Materials Processing, Vol.19, No.3, pp. 603-617, 2023, DOI:10.32604/fdmp.2022.023919
Abstract Pipelines are widely used for transporting oil resources in the context of offshore oil exploitation. The pipeline stress-strength analysis is an important stage in related design and ensuing construction techniques. In this study, assuming representative work environment parameters, pipeline lifting operations are investigated numerically. More specifically, a time-domain coupled dynamic analysis method is used to conduct a hydrodynamic analysis under different current velocities and wave heights. The results show that proper operation requires the lifting points are reasonably set in combination with the length of the pipeline and the position of the lifting device on the construction ship. The impact… More >
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Sergey Popov1, Sergey Chernyshov2,*, Evgeniy Gladkikh2
FDMP-Fluid Dynamics & Materials Processing, Vol.19, No.3, pp. 619-634, 2023, DOI:10.32604/fdmp.2022.021936
（This article belongs to this Special Issue: Fluid Dynamics & Materials Processing in the Oil and Gas Industry)
Abstract During oil and gas fields development, a decrease in reservoir and bottomhole pressure has often a detrimental effect on reservoir properties, especially permeability. This study presents the results of laboratory tests conducted to determine the response of terrigenous reservoir core-sample permeability to changes in the effective stresses and a decrease in the reservoir pressure. The considered samples were exposed for a long time to a constant high effective stress for a more reliable assessment of the viscoplastic deformations. According to these experiments, the decrease of the core samples permeability may reach 21% with a decrease in pressure by 9.5 MPa… More >
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Zhenfeng Li, Yaqiao Li*, Guangjun Wei
FDMP-Fluid Dynamics & Materials Processing, Vol.19, No.3, pp. 635-649, 2023, DOI:10.32604/fdmp.2022.020633
（This article belongs to this Special Issue: Advanced Oil and Gas Transportation and Treatment Technologies)
Abstract In this study, the Stokes formula is used to analyze the separation effect of three-phase separators used in a Oilfield Central Processing Facility. The considered main influencing factors include (but are not limited to) the typical size of oil and water droplets, the residence time and temperature of fluid and the dosage of demulsifier. Using the “Specification for Oil and Gas Separators” as a basis, the control loops and operating parameters of each separator are optimized Considering the Halfaya Oilfield as a testbed, it is shown that the proposed approach can lead to good results in the production stage. More >
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Zhibin Zhang1,2, Yongjun Gong1,*, Liping Zhang3, Min Xv2, Gaofeng Shang4
FDMP-Fluid Dynamics & Materials Processing, Vol.19, No.3, pp. 651-662, 2023, DOI:10.32604/fdmp.2022.020936
Abstract Water jets are widely used in seabed scouring and desilting applications. In the present work, dedicated tests have been conducted using a jet scour model test platform and sand beds containing grains with different sizes. The FLOW-3D simulation software has also been used to tackle the problem form a numerical point of view. The boundary conditions of the simulation have been optimized to reduce the gap between the numerical results and the outcomes of the experimental tests. Scour area calculation has been based on a RNG k-ε Turbulence model. Moreover, the FAVOR (Fractional Area Volume Obstacle Representation) technology has been… More >
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Tahir Naseem1,2,*, Iqra Bibi1, Azeem Shahzad2, Mohammad Munir3
FDMP-Fluid Dynamics & Materials Processing, Vol.19, No.3, pp. 663-677, 2023, DOI:10.32604/fdmp.2022.021136
（This article belongs to this Special Issue: Advances in Fluid Flow, Heat and Thermal Sciences)
Abstract Heat transfer in an Eyring-Powell fluid that conducts electricity and flows past an exponentially growing sheet is considered. As the sheet is stretched in the x direction, the flow develops in the region with y > 0. The problem is tackled through a set of partial differential equations accounting for Magnetohydrodynamics (MHD), radiation and Joule heating effects, which are converted into a set of equivalent ordinary differential equations through a similarity transformation. The converted problem is solved in MATLAB in the framework a fourth order accurate integration scheme. It is found that the thermal relaxation period is inversely proportional to… More >
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Wei Chen1,*, Weijie Shan1, Yue Liang1, Frederic Skoczylas2
FDMP-Fluid Dynamics & Materials Processing, Vol.19, No.3, pp. 679-696, 2023, DOI:10.32604/fdmp.2022.021249
Abstract This study deals with the analysis of the detrimental effects of a “sulfate attack” on cement mortar for different dry-wet cycles. The mass loss, tensile strength, and gas permeability coefficient were determined and analyzed under different exposure conditions. At the same time, nitrogen adsorption (NAD), scanning electron microscopy (SEM), and X-ray diffraction (XRD) techniques were used to analyze the corresponding variations in the microstructure and the corrosion products. The results show that certain properties of the cement mortar evolve differently according to the durations of the dry-wet cycles and that some damage is caused to the mortars in aqueous solution.… More >
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Yue Yu*
FDMP-Fluid Dynamics & Materials Processing, Vol.19, No.3, pp. 697-709, 2023, DOI:10.32604/fdmp.2022.021482
（This article belongs to this Special Issue: Advanced Materials, Processing and Testing Technology)
Abstract The sol-gel method is used to prepare a new nano-alumina aerogel structure and the thermal properties of this nanomaterial are investigated comprehensively using electron microscope scanning, thermal analysis, X-ray and infrared spectrometer analysis methods. It is found that the composite aerogel alumina material has a multi-level porous nano-network structure. When employed for the thermal insulation of high-rise buildings, the alumina nanocomposite aerogel material can lead to effective energy savings in winter. However, it has almost no energy-saving effect on buildings where energy is consumed for cooling in summer. More >
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