Results 11 to 20 of about 1,650 (259)
A review on the buried pipeline responses to tunneling-induced ground settlements [PDF]
Analytical and Numerical Methods in Mining Engineering, 2023 The expansion of cities and urban areas has resulted in an increased demand for environmental and economic transport and services infrastructure. Tunneling, as one of mankind's engineering underground constructions, is taking place close to buried and ...
Hadi Mahmoudi +2 more
doaj +1 more source
Experimental Study of Twin Connected Pipe Jets
European Journal of Engineering and Technology Research, 2020 Two parallel pipe jets of 20 mm diameter were placed 1.2 mm diameter apart and were connected by a 4 mm wide channel all along the central plane of the jets. The mean velocity flow field of the jets was investigated for three Reynolds number 16300, 34400 and 49200. The Reynolds number was based on the exit velocity of the jets and jet diameter.
Md. Abu Taher Ali +3 more
openaire +2 more sources
Research on Nonconstant and Discontinuous Pumping Characteristics of the Concrete Pump Truck
Lubricants, 2023 The nonconstant concrete flow due to the alternating pumping of the twin cylinder of the hydraulic pump will cause vibration of concrete pump trucks.
Yafeng Ren +6 more
doaj +1 more source
IEEE Access, 2023 In this paper, we describe how the up-to-date state of a digital twin, and its corresponding simulation model, can be used as a fitness function of an evolutionary algorithm for optimizing a large-scale industrial process.
Miro Eklund +5 more
doaj +1 more source
Une double conduite en bois découverte avenue du Point-du-Jour à Lyon
Gallia, 2023 An excavation conducted at 73-75-77 avenue du Point-du-Jour in Lyon (Rhône) in January 2020 brought to light a hydraulic system consisting of a double wooden pipe.The two parallel pipes lie in a ditch measuring 4 m in width and 2.80 m in depth.
Sylvain Motte
doaj +1 more source
Calculation model for strain of buried pipeline under the action of continuous surface displacement
You-qi chuyun, 2021 The long-distance oil & gas pipelines run through areas with various complicated geological conditions and often face the threats of geological hazards.
Ning GAO +5 more
doaj +1 more source
Energies, 2019 This paper presents possible variants of reducing the heat loss in an existing heating network made from single pre-insulated pipes located in central Europe.
Dorota Anna Krawczyk +1 more
doaj +1 more source
Optimization of Geometric Parameters of Thermal Insulation of Pre-Insulated Double Pipes
Energies, 2019 This paper presents the analysis of the heat conduction of pre-insulated double ducts and the optimization of the shape of thermal insulation by applying an elliptical shape.
Dorota Anna Krawczyk +1 more
doaj +1 more source
A Similarity Model of Specific Heat Loss Determined by Dimensional Analysis
Applied Sciences, 2023 This article describes an innovative method for the determination of heat flow (specific heat loss; linear heat flow density) from a one-metre length of a twin pipe directly-buried heat network.
Mária Čarnogurská +5 more
doaj +1 more source
Proceedings, 2018 In the case of a computational example, a few aspects of the twin pipe geometry are presented, which have an effect on heat losses through double heating ducts.
Dorota Anna Krawczyk +1 more
doaj +1 more source