Ship power plants最新文献

МОДЕЛЮВАННЯ ТА АНАЛІЗ ГІДРОДИНАМІКИ ПАРОГАЗОВИХ ПОТОКІВ У СКРУБЕРІ ВЕНТУРІ

Ship power plants Pub Date : 2019-06-12 DOI: 10.31653/smf39.2019.5-13

В.В. Афтанюк, Д.В., Даниленко, А.В. Афтанюк

{"title":"МОДЕЛЮВАННЯ ТА АНАЛІЗ ГІДРОДИНАМІКИ ПАРОГАЗОВИХ ПОТОКІВ У СКРУБЕРІ ВЕНТУРІ","authors":"В.В. Афтанюк, Д.В., Даниленко, А.В. Афтанюк","doi":"10.31653/smf39.2019.5-13","DOIUrl":"https://doi.org/10.31653/smf39.2019.5-13","url":null,"abstract":"The article presents the results of numerical simulation of a Venturi scrubber for purifying contaminated gases from SOx emitted into the atmosphere by marine engines. To model aerodynamics, a solid-state model of a Venturi scrubber was developed. Geometrical parameters and standard models are designed to ensure that they are stowed in clean ship systems. At the first stage, they reached the bottom of the gas stream into the scrubber while feeding the obsolete gas in an amount of 32 m3 /s. On the basis of the obtained model of air flow graphs of velocity and pressure distribution along the axis of the Venturi scrubber were constructed. To determine the rational volume of steam to be fed to the scrubber to ensure a uniform distribution of it on the apparatus, studies of the distribution at different amounts of steam.The study was conducted for three modes of operation of the scrubber, which differ in the amount of saturated steam supplied to the apparatus (1, 5, 10 m3 /s). The simulation results allowed us to analyze the distribution of gas velocities and pressures in the scrubber, the efficiency of spraying and mixing of the gas stream and steam. Based on the analysis of hydrodynamics, the rational mode of operation of the scrubber is determined (steam supply – 10 m3 /s). Further increase in the amount of steam can be considered impractical due to the fact that the gas velocity of the apparatus is greatly increased, which in turn leads to increased resistance of the apparatus and the leakage of dust. The result of the early analysis is the transition to early models of purification systems based on the Venturi scrubber. The developed model can be used as a separate unit in large models of cleaning systems, which include several types of scrubbers for various industries.","PeriodicalId":435600,"journal":{"name":"Ship power plants","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124357001","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

МОДЕЛЮВАННЯ ГІДРОДИНАМІКИ КОРПУСА СУДНА З УРАХУВАННЯМ БІОЛОГІЧНОГО ЗАБРУДНЕННЯ

Ship power plants Pub Date : 2019-05-05 DOI: 10.31653/smf39.2019.14-21

В.В. Афтанюк

{"title":"МОДЕЛЮВАННЯ ГІДРОДИНАМІКИ КОРПУСА СУДНА З УРАХУВАННЯМ БІОЛОГІЧНОГО ЗАБРУДНЕННЯ","authors":"В.В. Афтанюк","doi":"10.31653/smf39.2019.14-21","DOIUrl":"https://doi.org/10.31653/smf39.2019.14-21","url":null,"abstract":"The article presents a study of the effect of roughness and waviness (including taking into account bioburden) on the hydrodynamic characteristics of the vessel. To carry out the experiments, a model of the hull of the vessel was developed, which includes the submerged underwater part of the vessel and a special channel in which the flow is modeled. Biological contamination (bio-fouling of the underwater hull) of seaships and river-ships is a problem for all fleets. To maintain the speed of a ship with biological contamination, the hull requires an increase in diesel power by increasing the fuel supply. To maintain the speed of a ship with biological contamination, the requires an increase in diesel power by increasing the fuel supply. It affects the economy and environmental friendliness of maritime transport. The model investigated the change in fluid velocity during flow around a \"clean surface\" with a roughness of 75, 100, 125 microns. Numerical modeling showed a slight effect of changes in coating roughness for a “clean surface”. Numerical modeling for a surface contaminated with biological contaminants (roughness of 750 micron) revealed a significant effect on the change in fluid velocity along the hull. The developed model can be used when conducting research for a comparative assessment of the energy efficiency of ships.","PeriodicalId":435600,"journal":{"name":"Ship power plants","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123576103","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

МЕТОД ПОШУКУ РОЗВ’ЯЗАННЯ СКЛАДНОЇ ЗАДАЧІ ІНТЕРПРЕТАЦІЇ ДЛЯ РОЗВ'ЯЗАННЯ ЗВОРОТНОЇ ЗАДАЧІ З ВИЗНАЧЕННЯ СКЛАДУ ПАЛЬНОГО

Ship power plants Pub Date : 2019-05-05 DOI: 10.31653/smf39.2019.30-42

О.В. Бутенко

{"title":"МЕТОД ПОШУКУ РОЗВ’ЯЗАННЯ СКЛАДНОЇ ЗАДАЧІ ІНТЕРПРЕТАЦІЇ ДЛЯ РОЗВ'ЯЗАННЯ ЗВОРОТНОЇ ЗАДАЧІ З ВИЗНАЧЕННЯ СКЛАДУ ПАЛЬНОГО","authors":"О.В. Бутенко","doi":"10.31653/smf39.2019.30-42","DOIUrl":"https://doi.org/10.31653/smf39.2019.30-42","url":null,"abstract":"The topic of the article is to develop a method of finding a solution to a complex interpretation problem to solve the inverse problem of determining the composition of the fuel. The determination of the qualitative and quantitative composition of gas is distinguished by chemical, physico-chemical and physical methods. Known advantages of physical-chemical and physical methods over chemical, namely, speed of execution, the possibility of automation of analysis, made possible their widespread dissemination. Currently, the most widely used methods are gas chromatography. The main drawbacks of these instruments are the consistent measurement of the gas components, the long analysis time. The purpose of the research is to develop a method of finding a solution to a complex interpretation problem to solve the inverse problem of determining the composition of the fuel. The scientific and practical significance of the work lies in the definition of the general type of problem, as inversely incorrectly assigned and distinguished its narrower class - a difficult task of interpretation. Methods for solving the problem of controlled combustion of gaseous fuels of variable composition and finding a solution to the inverse problem of interpretation based on the use of library data have been developed. Modeling of technological measurements with accepted errors is carried out. The research methodology is based on the solution method - NewtonRafson method, square matrix conditionality, and library method for solving the inverse problem. The modeling of the proposed methods in determining the composition of the fuel allowed for the considered substances (methane, propane, ethyl alcohol) with the measurement errors made it possible to get decisions within the model. The practical value of the study is that it is shown as the introduced errors increase the range of possible solutions. The influence of 2019 – № 39 Суднові енергетичні установки 31 measurement accuracy of technological parameters on the uncertainty of the fuel composition determination is determined.","PeriodicalId":435600,"journal":{"name":"Ship power plants","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123904022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

EFFECTIVENESS OF NANODISPERSED SUBSTANCES UTILIZATION IN SHIP’S MECHANISMS 纳米分散物质在船舶机械中应用的有效性

Ship power plants Pub Date : 2019-05-05 DOI: 10.31653/smf39.2019.101-106

S. Kozytskyi, S.V. Kiriian

{"title":"EFFECTIVENESS OF NANODISPERSED SUBSTANCES UTILIZATION IN SHIP’S MECHANISMS","authors":"S. Kozytskyi, S.V. Kiriian","doi":"10.31653/smf39.2019.101-106","DOIUrl":"https://doi.org/10.31653/smf39.2019.101-106","url":null,"abstract":"The history of civilization is inseparably associated with the development of high-quality materials technology [1]. Modern materials science, aimed at the production of the materials with special properties, is connected with the fundamental and applied science of nanotechnology which studies the laws of physical and chemical nano-sized systems. Almost all nanosystems are obtained under the conditions far from equilibrium. It allows achieving spontaneous nucleation, and to avoid growth and aggregation of the formed nanoparticles. Studies have shown that nano-based materials have new and sometimes unusual properties [2]. It is known that for conventional materials the greater the strength of the material the less its ductility. In nanomaterials, a new paradox [3] of strength and ductility (a simultaneous increase in strength and ductility) has been discovered. In addition, nanomaterials have a higher fracture toughness and substantial wear resistance. The physical nature of the new phenomenon is connected with the change of micromechanisms of deformation, when, along with the motion of lattice dislocations at the boundary of formed nanograins, grain-boundary glide occurs [4]. Additives to operating media are widely used in mechanism’s systems. In particular, the reliability of friction units is determined in many respect with the presence of antiwear and boundary additives in lube oils. The transition from micron- to nano-sized additives is being widely implemented in technology at present. In this paper, we have analyzed the effectiveness of the utilization of nanodispersed substances and their compounds in order to increase the service life of the ship’s equipment.","PeriodicalId":435600,"journal":{"name":"Ship power plants","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132486670","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

10.31653/smf39.2019.14-21 10.31653 / smf39.2019.14-21

Ship power plants Pub Date : 2019-05-05 DOI: 10.31653/smf39.2019.22-29

В.М. Богач, Национальный университет, Одесская морская академия

引用次数: 0

ПІДВИЩЕННЯ ЦЕТАНОВОГО ЧИСЛА ДИЗЕЛЬНОГО ПАЛИВА ПРИ ДОМІШКАХ НАНОПОРОШКА ОКСИДА АЛЮМІНІЯ (AL2O3)

Ship power plants Pub Date : 2019-05-05 DOI: 10.31653/smf39.2019.69-77

В.І. Кулік В.І.

{"title":"ПІДВИЩЕННЯ ЦЕТАНОВОГО ЧИСЛА ДИЗЕЛЬНОГО ПАЛИВА ПРИ ДОМІШКАХ НАНОПОРОШКА ОКСИДА АЛЮМІНІЯ (AL2O3)","authors":"В.І. Кулік В.І.","doi":"10.31653/smf39.2019.69-77","DOIUrl":"https://doi.org/10.31653/smf39.2019.69-77","url":null,"abstract":"The main trends in modern diesel engines are the increase in fuel efficiency and operational reliability of engines, as well as their environmental safety, mainly related to stringent emission requirements for exhaust gases. The necessity of the world navy fleet in the non-existent amount of fuel is clarified, the forecast is made, which implies further increase of its consumption. The total capacity of marine engines in the world, and in the longterm perspective, until 2050, is determined. The number of emissions of harmful substances into the atmosphere by the ships of the world fleet is shown, international norms are regulated, which strictly regulate the number of these emissions, as well as the dynamics of the strengthening of norms for the present and for the future. Certain types of technological emissions and the composition of harmful substances in the exhaust gases of marine engines have been identified. They make up 0.1 - 1.0% of total emissions, are in gaseous state and include carbon monoxide oxides, NOx nitrogen, SOx sulfur, and hydrocarbon CrNy. Emissions of nitrogen oxides (NOx) with off-gas from marine diesel engines account for about 14% of global NOx emissions from the combustion of all types of fossil hydrocarbon fuels The analysis of methods of their purification is carried out. An analysis of recent publications has been carried out It is known that the quality of diesel fuel, its physical and chemical properties, affect the fuel economy and the content of harmful substances in the exhaust gases of the engine. The most common way to ensure the required properties of diesel fuel is the introduction of multifunctional impurities. The groups of impurities to diesel fuel are given. The influence of nano-metal impurity on Al2O3 fuel is analyzed. The analysis of diesel fuel with an admixture of aluminum oxide nanopowders (Al2O3) gamma-modification. It has been established that the additive to diesel fuel based on AL2O3 nanopowders is promising. It is expedient to carry out a complex of motor tests for introduction of an additive on the sea and river fleet","PeriodicalId":435600,"journal":{"name":"Ship power plants","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117142951","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

ЗАСТОСУВАННЯ ІНФОРМАЦІЙНИХ ТЕХНОЛОГІЙ У СУДНОВИХ ТЕХНОЛОГІЧНИХ ПРОЦЕСАХ 在船上技术流程中应用信息技术

Ship power plants Pub Date : 2019-05-05 DOI: 10.31653/smf39.2019.78-88

О.С. Савельева

{"title":"ЗАСТОСУВАННЯ ІНФОРМАЦІЙНИХ ТЕХНОЛОГІЙ У СУДНОВИХ ТЕХНОЛОГІЧНИХ ПРОЦЕСАХ","authors":"О.С. Савельева","doi":"10.31653/smf39.2019.78-88","DOIUrl":"https://doi.org/10.31653/smf39.2019.78-88","url":null,"abstract":"У більшості технологічних процесів, що використовують інформаційні технології для візуалізації поточних параметрів, мається на увазі представлення остаточного результату в найбільш зручному для користувача вигляді. У застосуванні до різних тепло- і масообмінних або гідродинамічних процесів, які зустрічаються на суднах можна констатувати, що поля температури, швидкості, тиску, завихореності, концентрації і т. п., які отримуються в кінцевому підсумку дуже часто характеризуються багатовимірними і великими за обсягами масивами чисельних даних. Всі методи, що використовуються для їх обробки вимагають наявність у користувача певних знань і дуже часто характеризуються слабкою інформативністю або завищеними вимогами до обчислювальної техніки.","PeriodicalId":435600,"journal":{"name":"Ship power plants","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134009595","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

ANALYSIS OF CONSTRUCTION FEATURES OF GASFUELED VESSEL’S STORAGE TANKS 燃气船储罐结构特点分析

Ship power plants Pub Date : 2019-05-05 DOI: 10.31653/smf39.2019.89-95

O.O. Kaluga

引用次数: 0

ОСОБЛИВОСТІ ОБРОБКИ ПАРІВ ЗПГ НА ГАЗОВОЗАХ З МЕМБРАННИМ ТИПОМ ТАНКІВ

Ship power plants Pub Date : 2019-05-05 DOI: 10.31653/smf39.2019.43-55

М.А. Козьміних

{"title":"ОСОБЛИВОСТІ ОБРОБКИ ПАРІВ ЗПГ НА ГАЗОВОЗАХ З МЕМБРАННИМ ТИПОМ ТАНКІВ","authors":"М.А. Козьміних","doi":"10.31653/smf39.2019.43-55","DOIUrl":"https://doi.org/10.31653/smf39.2019.43-55","url":null,"abstract":"У статті розглядається використання зрідженого природного газу в якості палива судових малооборотних двигунах. Екологічний аспект переходу на використання ЗПГ є визначальним при виборі конкретного шляху виконання вимог конвенції МАРПОЛ 73/78. Результатом роботи двигуна внутрішнього згорання на природному газі є низькі викиди вихлопних газів в навколишнє середовище через відсутність в паливі забруднювачів. Метан, головний компонент природного газу, є високоефективним вуглеводневим паливом. Крім екологічних аспектів в даному випадку дуже важливі і економічні. Перехід на газове паливо на суднах забезпечує зниження експлуатаційних витрат за рахунок низької вартості газу, менших витрат на ТО. На сьогоднішній день реалізовані дві технології використання ЗПГ. Подача газу при високому тиску здійснюється при положенні поршня поблизу верхньої мертвої точки (ВМТ) і реалізована в двигунах MAN B & W серії MEGI. Та технологія подачі газу при низькому тиску заснована на спалюванні збіднених газоповітряних сумішей і реалізована в двигунах Winterthur Gas & Diesel Ltd (WinGD) DF і RT-flexDF.","PeriodicalId":435600,"journal":{"name":"Ship power plants","volume":"138 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121625478","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

ХАРАКТЕРИСТИКИ ПРОЦЕСУ ТЕПЛО-МАСОПЕРЕНОСУ В ЗАСТОСУВАННІ ДО ВЕНТИЛЯЦІЇ ІНЕРТНИМИ ГАЗАМИ ВАНТАЖНИХ ТРЮМІВ ТАНКЕРІВ

Ship power plants Pub Date : 2019-05-05 DOI: 10.31653/smf39.2019.56-68

О. В. Малахов

{"title":"ХАРАКТЕРИСТИКИ ПРОЦЕСУ ТЕПЛО-МАСОПЕРЕНОСУ В ЗАСТОСУВАННІ ДО ВЕНТИЛЯЦІЇ ІНЕРТНИМИ ГАЗАМИ ВАНТАЖНИХ ТРЮМІВ ТАНКЕРІВ","authors":"О. В. Малахов","doi":"10.31653/smf39.2019.56-68","DOIUrl":"https://doi.org/10.31653/smf39.2019.56-68","url":null,"abstract":"Ефективність експлуатації танкерів визначається двома основними напрямками: - якістю проведення транспортних операцій під час виконання рейсу; - технологічними схемами і виробничими операціями, які використовуються під час підготовки судна до прийому нового вантажу. Перший напрямок визначається якістю управління судном і, зокрема його технічним менеджментом. Другий напрямок визначається виробничими процесами, які використовуються при проведенні вантажно-розвантажувальних операцій. У другому напрямку особливе значення має якість експлуатації системи інертних газів танкера. Її головне призначення полягає в реалізації комплексу заходів, які забезпечують створення атмосфери, безпечної з точки зору виникнення вибухів або пожеж всередині трюму. Скорочення часу роботи системи інертизації трюмів танкеру безпосередньо визначає вартісні показники його роботи. Ця система повинна підтримувати в будь-якій частині вантажного трюму атмосферу із вмістом кисню не більше 8% за обсягом і надлишковий тиск на 20% більше атмосферного. При цих параметрах буде забезпечуватися протидія надходженню зовнішнього атмосферного повітря (надлишкової концентрації кисню) в середину трюму.","PeriodicalId":435600,"journal":{"name":"Ship power plants","volume":"260 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117166259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0