Search for dissertations about: "bends"

Showing result 1 - 5 of 39 swedish dissertations containing the word bends.

  2. 1. Of Pipes and Bends

    Author : Jacopo Canton; Philipp Schlatter; Ramis Örlü; Dwight Barkley; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; nonlinear instability; bifurcation; flow control; Engineering Mechanics; Teknisk mekanik;

    Abstract : This work is concerned with the transition to turbulence of the flow in bent pipes, but it also includes an analysis of large-scale turbulent structures and their use for flow control.The flow in a toroidal pipe is selected as it represents the common asymptotic limit between spatially developing and helical pipes. READ MORE

  4. 2. Experimental study of turbulent flows through pipe bends

    Author : Athanasia Kalpakli; P. Henrik Alfredsson; Ramis Örlü; Christoph Brücker; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Turbulent flow; swirl; pulsation; pipe bend; hot-wire anemometry; cold-wire anemometry; laser Doppler velocimetry; stereoscopic particle image velocimetry.;

    Abstract : This thesis deals with turbulent flows in 90 degree curved pipes of circular cross-section. The flow cases investigated experimentally are turbulent flow with and without an additional motion, swirling or pulsating, superposed on the primary flow. READ MORE

  5. 3. Corrosion testing of heat exchanger tubing

    Author : Ulf Kivisäkk; KTH; []
    Keywords : corrosion testing; heat exchanger; stainless steels; general corrosion; immersion testing; activation; stress corrosion cracking; constant load; u-bends; relaxation; dewpoint corrosion;

    Abstract : Heat exchanger tubes are commonly made from stainless steel.In a heat exchanger both the process fluid and the cooling orheating media can be corrosive. It is therefore important to beable to select materials that do not suffer from corrosion.Current methods in this area, however, suffer from limitationsand shortcomings. READ MORE

  6. 4. Transmission of elastic stress wave energy through joints and bends in percussive rock drilling systems

    Author : Rainer Beccu; Uppsala universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP;

    Abstract : .... READ MORE

  7. 5. 3D printing of polymers onto textiles : An innovative approach to develop functional textiles

    Author : Prisca Eutionnat-Diffo; Barbara Simončič; Högskolan i Borås; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; 3D printing; Fused deposition modeling; Adhesion; Textile Functionalization; Statistical Modeling; Non conductive and conductive polymer; Multi-walled carbon nanotube; Carbon Black; Deformation; Tensile; Abrasion; Biphasic polymeric bends; 3D打印，熔融沉积成型，粘附性，纺织品功能性，数据建模，导电与非导电高聚物，多壁碳纳米管，炭黑，变形性能，拉伸性能，摩擦性能，二相高分子共混物; Impression 3D; Modélisation par dépôt de polymère fondu; Adhésion; Fonctionnalisation textile; Modélisation statistique; Polymère non conducteur et conducteur; Nanotube de carbone multi-parois; Noir de carbone; Déformation; Traction; Abrasion; Mélanges de polymères biphasiques; 3D-utskrift; smält deponeringsmodellering; vidhäftning; textilfunktionalisering; statistisk modellering; icke ledande och ledande polymer; flerväggigt kolnanorör; kolsvart; deformation; draghållfasthet; nötning; bifasisk polymerböjning; Textil och mode generell ; Textiles and Fashion General ;

    Abstract : This thesis aims at characterizing tridimensional (3D) printed polymers onto PET textile materials via fused deposition modeling (FDM) that uses both non-conductive and conductive polymers, optimizing their mechanical and electrical properties through statistical modeling and enhancing them with pre and post-treatments and the development of polymer blends. This research work supports the development of technical textiles through 3D printing that may have functionalities. READ MORE