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78 articles for “bubble”
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A New Method of Juice Concentration using a Hydrogen Bubbles Photoelectroflotation Process Powered by Solar
Abstract: Currently, juice concentrates are produced by extracting water from freshly squeezed juice. To extract water from freshly squeezed juice, one of the following methods is used: evaporation, freezing of water, or the use of diaphragms. When evaporating, freshly squeezed juice is heated in a vacuum in special trays, but not to the boiling point, since boiling the juice will destroy all its useful substances. The mass, obtained after evaporation is …
Published in Research & Reviews : Journal of Food Science & Technology · Vol. 12, Issue 1, 2024 · pp. 26–38 Read article
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Separation of gas bubbles from a fluid in microgravity
Abstract: The paper presents the constructed device and developed method of gas bubbles separation from fluid using the specially created temperature gradient in a fluid in the conditions of microgravity, which differs by simplicity of a construction, economically high efficiency and productivity, and can be successfully used to separation of gas bubbles from a fluid in various technological systems on the international space station. Such technological systems include processes that occur …
Published in Research & Reviews : Journal of Space Science & Technology · Vol. 9, Issue 1, 2020 · pp. 23–31 Read article
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Theoretical and Experimental Research of Phenomena Arising in a Vessel Containing the Bubbles Dissolved in the Fluid and the Air above Surface of Fluid under Impact of Vibration in the Acoustic Range both in the Terrestrial and Decreasing Acceleration of Gravity Conditions
Abstract: Under terrestrial conditions, gravitational forces prevent to obtain materials that are homogeneous in distribution components and phases. Strong thermo gravitational unsteady convection leads to instability of crystals growth parameters and limits the possibilities of obtaining the crystals with a high degree of homogeneity and perfect parity structures. The first results of crystals growth in microgravity showed the fundamental possibility of producing more advanced crystals due to the absence of gravitational …
Published in Journal of Aerospace Engineering & Technology · Vol. 11, Issue 1, 2021 · pp. 48–63 Read article
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Studies on CO2 Dissolution in Sodium Silicate for the Precipitation of Silica
Abstract: Rice husk is an agricultural residue abundantly available. Rice husk is a fuel having high ash content; major constituent being silica (90%). Extracting silica from Rice husk ash (RHA) not only adds value but also solves disposal problem of large amount of ash. Conventionally silica is extracted from quartz (silica rock) but this route is expensive and required more energy and RHA is the ultimate choice. Alternately Extraction of silica …
Published in Emerging Trends in Chemical Engineering · Vol. 1, Issue 1, 2014 · pp. 70–75 Read article
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Solving Problems Arising during the Monocrystals Growth in Microgravity Using Controlled Vibration
Abstract: Earlier studies of the vibration effect on a vessel with a fluid with gas bubbles dissolved in it permitted to establish the localization and stable position of the "swarm" of gas bubbles at a certain level of fluid in the vessel, corresponding to a certain frequency and vibration acceleration, as well as the volume of the "swarm" of gas bubbles. Controlling the "swarm" of gas bubbles in a fluid by …
Published in Research & Reviews : Journal of Space Science & Technology · Vol. 10, Issue 1, 2021 · pp. 25–40 Read article
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The Theoretical and Experimental Study of the Behavior of the Mercury Drop, Fixed on the Glass Bottom of Vessel with Fluid, Under the Acceleration of Gravity Change
Abstract: At present time, accumulated theoretical material of the studies of the equilibrium forms of the gas bubbles or mercury drops, fixed on the surface of solid material in the fluid or on the glass bottom of vessel with fluid, under the acceleration of gravity change, was carried out either on the basis of geometric similarity laws that greatly simplify the essence of physical processes, or on the basis of theoretical …
Published in Recent Trends in Fluid Mechanics · pp. 1–12 Read article
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Surface Level and Underwater Waste Removal System
Abstract: The paper introduces novel approach for surface and underwater waste collection, impact of water pollution can be devastating, affecting aquatic ecosystems, human health, and economies. Pollutants can harm aquatic plants and animals, disrupt ecosystems, and degrade water quality, making it unsafe for drinking, swimming, and other activities. Waterborne illnesses can also spread because of contaminated water, impacting groups of people who depend on tainted water supplies for hygiene and drinking. …
Published in Recent Trends in Fluid Mechanics · Vol. 11, Issue 2, 2024 · pp. 30–35 Read article
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The Theoretical and Experimental Study of the Behavior of the Mercury Drop, Fixed on the Glass Bottom of Vessel with Fluid, Under the Acceleration of Gravity Change
Abstract: At present time, accumulated theoretical material of the studies of the equilibrium forms of the gas bubbles or mercury drops, fixed on the surface of solid material in the fluid or on the glass bottom of vessel with fluid, under the acceleration of gravity change, was carried out either on the basis of geometric similarity laws that greatly simplify the essence of physical processes, or on the basis of theoretical …
Published in Recent Trends in Fluid Mechanics · Vol. 8, Issue 2, 2021 · pp. 1–12 Read article
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Two-chamber Medical Electroflotator for Cleaning of the Lymph of Cancer Patients from Toxic Substances and for the Destruction and Removal of Cancer Cells Contained in It
Abstract: Existing devices for cleaning of the lymph of patients with liver cirrhosis or hepatitis from a high concentration of toxic substances, contained in it, do not allow cleaning the body of patients from these toxic substances. In addition, these devices require the patient's lymph to be purified in a discrete mode, i.e., all the patient's lymph, without which the patient remains, is purified for a sufficiently long time, and after …
Published in Research and Reviews: Journal of Oncology and Hematology · Vol. 11, Issue 1, 2022 · pp. 21–27 Read article
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Purification of industrial wastewater using a photoelectroflotation process powered by solar energy
Abstract: The main problem of all existing electroflotation methods of wastewater treatment is salinization of the near-anode space during electroflotation, which leads to the formation of salt deposits on the anode, which strongly cover the anode surface, which can lead to a complete stop of the electroflotation process. The anode, used by electroflotation devices has a dense grid of small cells, which, on the one hand, increases the current density, but, …
Published in Emerging Trends in Chemical Engineering · Vol. 10, Issue 1, 2023 · pp. 36–53 Read article
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Numerical and Experimental aspects in two phase flow
Abstract: A complete numerical simulation of a bubble of lower density being introduced in fluid has been done. Transient finite volume used for the descritization of Navier Stokes equation and suitable boundary condition have been appiled to understand the dynamics of bubble.
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 5, Issue 3, 2018 · pp. 7–16 Read article
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A New Method for Continuous Charging of Spacecraft Fuel Elements Under Conditions of Long-term Space Flight
Abstract: Any flight control of a spacecraft (SC) depends on electricity on board. With the help of electricity, all its instruments and equipment (propulsion system, controls, communication systems, instrument complex, heating, etc.) function on board of the spacecraft. The power supply system (PSS) of a spacecraft is a critical system that ensures its life. The main base of the spacecraft power supply system is a system that generates direct electric current. …
Published in Research & Reviews : Journal of Space Science & Technology · Vol. 11, Issue 3, 2022 · pp. 25–39 Read article
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Development of Software Packages for Computer Aided Design and Performance Analysis of Industrial Fractional Distillation Equipment
Abstract: This paper deals with improved CAD software packages that have been developed with the objective of improvising the existing conservative design of fractional distillation equipment. Since fractional distillation is extensively employed in petroleum refineries, distilleries and in a large number of chemical process industries, accurate design and optimised performance of these equipments are detrimental to the overall economy of these industries. Further, the efficient performance of the fractionators are dependent …
Published in Emerging Trends in Chemical Engineering · Vol. 2, Issue 3, 2015 · pp. 15–41 Read article
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Numerical Analysis of Oblique Impinge shock-wave/turbulent boundary-layer interaction Using Reynolds Average Navier Stroke Equations
Abstract: Interaction of shock waves with turbulent boundary layer plays an important role in the design and operability of high-speed aerospace vehicles and air-breathing engines. During interaction, the adverse pressure gradient of the shock is often strong enough to separate the boundary layer. Reynolds averaged Navier-Stokes simulations using conventional turbulence models do not predict the correct size and shape of the separation bubble in strong shock/turbulent boundary-layer interactions. The corresponding surface …
Published in Research & Reviews : Journal of Space Science & Technology · Vol. 8, Issue 3, 2019 · pp. 31–48 Read article
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A New Developed Hydrogen Generator for Hydrogen Electric Vehicle
Abstract: Hydrogen practically does not occur in its pure form on Earth and must be extracted from other compounds using various chemical methods. There are currently many methods of industrial hydrogen production, which include: steam reforming of methane and natural gas; coal gasification; biotechnology; water electrolysis. Hydrogen production by water electrolysis has a number of advantages over other methods, including: availability of available raw materials (water); a wide range of hourly …
Published in Recent Trends in Fluid Mechanics · Vol. 10, Issue 1, 2023 · pp. 1–13 Read article
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The New Technology of Phytoplankton’s Concentration from Lake “Green Water” for Production of the High-quality Biofuel Having Positive Impact on the Environment
Abstract: The “green water” formation in the stagnant zones of fresh lakes occurs due to the generation and enhanced reproduction of phytoplankton under the sun influence. Due to non-influx of fresh water, phytoplankton dies, releasing hydrogen sulfide, and water becomes unusable and threatens the ecological situation of the lake. In this regard, the development of the concentration of phytoplankton from “green water” purification is an urgent task associated with positive impact …
Published in Trends in Electrical Engineering · Vol. 9, Issue 2, 2019 · pp. 27–34 Read article
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Dispersed Air Flotation for the Removal of Solids from Water
Abstract: The quest for clean drinking water is fundamental to our existence as without it, there is no life. This research exploits the feasibility of using principles of the state-of-the-art flotation technique for solid-liquid water clarification. Dispersed air flotation [DAF] as a separation technique, involves dispersing (scattering) compressed air at high pressure into water. A fluidic oscillator is employed to generate minute micro-bubbles from a 20 microns pore sized ceramic diffusers …
Published in Journal of Water Pollution & Purification Research · Vol. 6, Issue 2, 2019 · pp. 1–11 Read article
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Production of unique space materials
Abstract: Isotropic property of weightlessness arising in space flight permits to produce unique space materials.One such material is a foam material with the uniform distribution of fine dispersed gas phase.The paper represents a completely new methods of production of the unique space foam materials with the uniform distribution of fine dispersed gas phase using together the electric field and controlled vibration or electric field and inertial forces in the conditions of …
Published in Research & Reviews : Journal of Space Science & Technology · Vol. 8, Issue 3, 2019 · pp. 49–55 Read article
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Kick Tolerance Modeling in Well Design and Drilling: A Comprehensive Technical Review
Abstract: Kick and blowout events in drilling operations can lead to significant losses of equipment, and in some cases, human lives. Oil and gas companies, along with oilfield service providers involved in drilling operations, face severe penalties and sanctions following such incidents. Research has demonstrated that incorporating kick tolerance models during the well planning and drilling stages can mitigate the risk of blowouts during secondary well control operations. This study reviews …
Published in Journal of Petroleum Engineering & Technology · Vol. 15, Issue 3, 2025 · pp. 33–58 Read article
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Formation of Anolyte and Catholyte Types of Water during electrolysis and their Effect on Living Organisms
Abstract: During electrolysis, an anolyte (dead water) and catholyte (living water) solutions are formed. Anolyte promotes metabolic processes, and is also mild antiseptic. The disinfecting effect of the anolyte is equivalent to treatment with iodine, brilliant green, hydrogen peroxide, without causing chemical burns of living tissues and not staining them. The living water, being a catholyte, has enhanced bio stimulating properties. It has a beneficial effect on the human organism, enhancing …
Published in Emerging Trends in Chemical Engineering · Vol. 8, Issue 3, 2021 · pp. 34–40 Read article