<p>1D engine simulations of turbocharged engines are difficult to <!-- @page { size: 21cm 29.7cm; margin: 2cm } P { margin-bottom: 0.21cm } --></p><p>Techniques that can increase the SI- engine efficiency while keeping the emissions very low is to reduce the engine displacement volume combined with a charging system. Advanced systems are needed for an effective boosting of the engine and today 1D engine simulation tools are often used for their optimization.</p><p>This thesis concerns 1D engine simulation of a turbocharged SI engine and the introduction of CFD computations on components as a way to assess inaccuracies in the 1D model.</p><p>1D engine simulations have been performed on a turbocharged SI engine and the results have been validated by on-engine measurements in test cell. The operating points considered have been in the engine’s low speed and load region, with the turbocharger’s waste-gate closed.</p><p>The instantaneous on-engine turbine efficiency was calculated for two different turbochargers based on high frequency measurements in test cell. Unfortunately the instantaneous mass flow rates and temperatures directly upstream and downstream of the turbine could not be measured and simulated values from the calibrated engine model were used. The on-engine turbine efficiency was compared with the efficiency computed by the 1D code using steady flow data to describe the turbine performance.</p><p>The results show that the on-engine turbine efficiency shows a hysteretic effect over the exhaust pulse so that the discrepancy between measured and quasi-steady values increases for decreasing mass flow rate after a pulse peak.</p><p>Flow modeling in pipe geometries that can be representative to those of an exhaust manifold, single bent pipes and double bent pipes and also the outer runners of an exhaust manifold, have been computed in both 1D and 3D under steady and pulsating flow conditions. The results have been compared in terms of pressure losses.</p><p>The results show that calculated pressure gradient for a straight pipe under steady flow is similar using either 1D or 3D computations. The calculated pressure drop over a bend is clearly higher1D engine simulations of turbocharged engines are difficult to <!-- @page { size: 21cm 29.7cm; margin: 2cm } P { margin-bottom: 0.21cm } -->using 1D computations compared to 3D computations, both for steady and pulsating flow. Also, the slow decay of the secondary flow structure that develops over a bend, gives a higher pressure gradient in the 3D calculations compared to the 1D calculation in the straight pipe parts downstream of a bend.</p><p> </p>

Thesis--PlanB (M.S.)--University of Wisconsin--Stout, 1998. / Description based on microfiche version record. Includes bibliographical references.

Thesis--PlanB (M.S.)--University of Wisconsin--Stout, 1998. / Description based on microfiche version record. Includes bibliographical references.

Diss. (sammanfattning) Linköping : Univ., 2005. Diss. (sammanfattning) Jönköping : Högsk., 2005. / Härtill 8 uppsatser.

Thesis--University of Western Ontario. / Includes bibliographical references (p. 131-134).

Thesis--University of Western Ontario. / Includes bibliographical references (p. 131-134).

Solo is an eating scene for a single person. The aim is to break today’s traditional way of eating alone at a restaurant through a series of instruments, arranged in a specific order, combined with a set menu. The eating experience is a melody, conducted by the instruments. By presenting different alternatives and choices along the way, there is also space for the guest to jam. To compose their own experience and make their own kind of music. To slow down, think, look, taste, feel, reflect, evaluate, act and compose. To activate and stimulate the hands, the heart and the brain , to really appreciate the situation and to give time for oneself through the act of eating. Solo — in the company of food

No description available.

No description available.

This project originated from my experience of an earthquake in September 2016, in Seoul, South Korea. It was an opportunity to re-think my disconnected relationship to nature. The sense of consciousness in nature and the symbiosis between humans and nature has been taken over by nature objectification. The question ´what if we change the perspective toward nature from objective to subjective?´ came to my mind. Subjective Nature means that humanity is emotionally intertwined with nature. In this project, I propose a sound installation that I named ‘Swing Jam’. The intention is to translate the natural movement of pendulums into a sound experience. This could be poetically interpreted as ‘giving a voice to nature’. By experiencing sound, I wish to evoke an emotional connection between nature and human. By empowering nature and individual experiences through designing situations, I wish to open up the emotional dialogue between human and nature. In this project, I’d like to awaken the importance of individual and emotional experience that is the core of being in an ecosystem. Furthermore, this is an accessible dialogue between nature and human.