Browsing by Subject "Fluids -- Mesurament"

Now showing items 1-20 of 28

    • A numerical study on turbulence generation and decay in a suddenly stopped Taylor Couette flow 

      Manyer Fuertes, Pau (Universitat Politècnica de Catalunya, 2022-07-06)
      Bachelor thesis
      Open Access
      In this study are presented the numerical results obtained when simulating the abruptly stoppage of the outer cylinder in a Taylor-Couette system where the inner cylinder is static. The results are compared with the ...

    • Assessing the physics of models for transition in pipe flow 

      Cela París, José María (Universitat Politècnica de Catalunya, 2022-07-06)
      Bachelor thesis
      Open Access
      Covenantee:   Universität Bremen / Zentrum für angewandte Raumfahrt­technologie und Mikro­gravitation
      Transition to turbulence in pipe flow is a long standing problem in the field of turbulence research. In the route to fully turbulent pipe flow, turbulence presents itself in a wide variety of forms. In recent years, a ...

    • Cálculo teórico de la relación señal a ruido en función del tamaño de la apertura receptora de un anemómetro láser doppler (LDA) 

      García Vizcaíno, David; Recolons Martos, Jaume; Dios Otín, Víctor Federico; Comerón Tejero, Adolfo (2004-09)
      Conference report
      Open Access
      From the expressions by Adrian and Earley (Proceeding of Minessota Symposium on Laser Anemometry, University of Minessota, Dept. of Conference, Minneapolis, 1976), we have calculated the signal-to-noise ratio of a Laser ...

    • Characterization of localized solutions of plane Poiseuille flow in very long domains 

      Valera Pascual, Antonio (Universitat Politècnica de Catalunya, 2016-05-24)
      Bachelor thesis
      Open Access
      The aim of this Bachelor's Thesis is the study of a particular low-energy localized plane Poiseuille solution while minimizing the error introduced by the streamwise periodicity boundary condition. The fact that the ...

    • Confocal flowmeter based on self-mixing interferometry for real-time velocity profiling of turbid liquids flowing in microcapillaries 

      Yáñez Alvarado, Carlos René; Azcona Guerrero, Francisco Javier; Royo Royo, Santiago (2019-08-19)
      Article
      Open Access
      We propose a new confocal device for flow profiling in microcapillaries. A viewfinder system is developed using a visible light microscope, allowing focusing with high precision an 830 nm Fabry-Perot laser diode on a ...

    • Design and characterization of a magnetic digital flow regulator 

      Casals Terré, Jasmina; Duch, M.; Plaza, J. A.; Esteve, J; Pérez Castillejos, R.; Vallés, E.; Gómez, E. (2010-07-01)
      Article
      Restricted access - publisher's policy
      Design, fabrication and testing of a novel micromachined “quasi-digital” microflow regulator for integrated microfluidic systems. Operation relies on the use of a permanent magnet which interacts with an electrodeposited ...

    • Design of a conductivity meter for fluids 

      Janer Serramià, Arnau (Universitat Politècnica de Catalunya, 2017-06)
      Bachelor thesis
      Open Access
      This work relates de process of analysis and creation of a conductimeter for fluids. The conductivity is a physical magnitude present on any material, this magnitude provides some revelant information about its composition. ...

    • Developing a microdevice to detect bacteria in blood 

      Cabanas Altarriba, Sara (Universitat Politècnica de Catalunya, 2023-05-22)
      Bachelor thesis
      Restricted access - confidentiality agreement
      Covenantee:   Kungliga Tekniska högskolan
      Sepsis is a severe condition that occurs as a result of an uncontrolled host response to infection. With the high fatality rates and morbidity associated with sepsis and septic shock, there is a pressing need to improve ...

    • Digital control of pre-turbulent flows in a Taylor-Couette device 

      Gil Bofill, Núria (Universitat Politècnica de Catalunya, 2019-07-09)
      Bachelor thesis
      Open Access
      Transition to turbulence is one of the oldest problems yet to be solved in physics and engineering. Certain fluid systems are known to undergo a laminar-turbulent transition through a deterministic route of laminar flows ...

    • Estudio de la distribución de caudales en un cruce de calles con anchos diferentes 

      Gonzalo Pascual, Ruth (Universitat Politècnica de Catalunya, 2003-01-21)
      Minor thesis
      Open Access
      Los sucesos de tormenta en las grandes ciudades ocasionan graves problemas tanto más acusados cuanto mayor desarrollo tiene la ciudad. Es por ello que resulta interesante conocer la dinámica de la escorrentía superficial ...

    • Experimental study on the impulsion port of a trochoidal wheeled pump 

      Raush Alviach, Gustavo Adolfo; Gámez Montero, Pedro Javier; Castilla López, Roberto; Codina Macià, Esteban (2017-06-01)
      Article
      Open Access
      All positive displacement pumps produce a pulsating flow. The present paper reports the experimental measurement of steady flow pulsations in the outlet of the internal wheeled pump. In the measured flow, the manufacturing ...

    • Fabrication of ito-ida microarray electrodes and integration with a fluidic device to be applied as a bioreactor in tissue engineering 

      Rodriguez Moreso, Samuel (Universitat Politècnica de Catalunya, 2018-06)
      Bachelor thesis
      Open Access
      Covenantee:   Institut de Bioenginyeria de Catalunya
      The main objective of this project is the fabrication of a bioreactor to be used in the development of a multi-organ-on-a-chip and the optimization of different parameters that are involved into the fabrication of ITO-IDA ...

    • High-precision time-of-flight determination algorithm for ultrasonic flow measurement 

      Suñol Galofre, Francesc Xavier; Ochoa Guerrero, Diego A.; García García, José Eduardo (2019)
      Article
      Open Access
      Commercial time-of-flight (TOF) ultrasonic flowme- ters are rapidly expanding in the general industry. Among the different techniques that can be applied to determine the TOF of ultrasonic waves, the cross-correlation ...

    • Implementation of a representative volume element for the multi-scale simulation of turbulent flows 

      Casanovas García, Borja (Universitat Politècnica de Catalunya, 2022-07-18)
      Bachelor thesis
      Open Access
      This work comprises the start of what will be a fully operational P-DNS algorithm within the Kratos Multiphysics framework. As the methodology followed requires an offline computation the algorithm that runs it ought to ...

    • Implications of inertial focusing in macroscale coronary flow 

      Santigosa Pinilla, Marc (Universitat Politècnica de Catalunya, 2017-06)
      Bachelor thesis
      Restricted access - confidentiality agreement

    • Improving the cross-shore transport approximation in coastal modelling in the face of climate change 

      Simó Romaguera, Xavier (Universitat Politècnica de Catalunya, 2021-07-12)
      Bachelor thesis
      Open Access
      The long-term evolution of sandy coasts is caused by gradients in the sediment transport, a very complex (and partially unknown) process driven by surface wave orbital motion and wave-driven mean currents. The corresponding ...

    • Large eddy simulation of the combustion in an oxygen-paraffin hybrid rocket engine 

      Homs Pons, Carme (Universitat Politècnica de Catalunya, 2019-06)
      Bachelor thesis
      Open Access
      Covenantee:   Zentrum für angewandte Raumfahrt­technologie und Mikro­gravitation
      En la última década se ha despertado un renovado interés en los cohetes híbridos debido a su bajo precio, manejo seguro y compatibilidad con carburantes verdes. Un grupo de estudiantes está desarrollando un cohete híbrido ...

    • Laser-induced forward transfer of liquids : Study of the droplet ejection process 

      Colina Brito, Mónica Alejandra; Duocastella, Martí; Fernández Pradas, J. Marcos; Serra Coromina, Pere; Morenza, José L. (American Institute of Physics (AIP), 2006-05-03)
      Article
      Open Access
      Laser-induced forward transfer LIFT is a laser direct-write technique that offers the possibility of printing patterns with a high spatial resolution from a wide range of materials in a solid or liquid state, such as ...

    • Magnetocaloric anemometry. A novel concept for fluid flow measurement 

      Arias Montenegro, Francisco Javier (2020-06-01)
      Article
      Open Access
      Colloidal magnetic fluids (ferrofluids) and its significance with regard to fluid flow measurement is discussed. This concept -which can properly be called as magnetocaloric anemometry, blikewise than hot-wire anemometry ...

    • Mesura de cabal de líquids, gasos i vapor en la indústria 

      Montes, Mari Paz (Societat Catalana de Tecnologia, 2009-11-13)
      Audiovisual
      Open Access
      La mesura de cabal dels fluids s’ha dut a terme des de l’antiguitat. El primer sistema de mesura de cabal documentat data en l’antic Egipte, fa més de tres mil anys, i consistia en un rudimentari vessador. Malgrat que ...