Sökning: "Ting Liu"

Visar resultat 1 - 5 av 10 avhandlingar innehållade orden Ting Liu.

1. 1. Air-pocket transport in conjunction with bottom-outlet conduits for dams

   Författare :Ting Liu; Anders Wörman; James Yang; Staffan Lundström; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Air-water two-phase flow; critical velocity; diameter effect; roughness; VOF model; bottom outlet; experiment;

   Sammanfattning : Undesired air entrainment in bottom outlet conduits of dams may cause pressure transients, leading to conduit vibrations, blowback, discharge pulsation and even cavitation, and jeopardize the operational safety. Due to design limitations or construction costs, it is impossible to create an air free environment in a pressurized pipe. LÄS MER

3. 2. Modelling air―water flows in bottom outlets of dams

   Författare :Ting Liu; James Yang; Anders Wörman; Michael Pfister; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Air pocket; Air entrainment; Bottom outlet; Critical velocity; Critical submergence; CFD; Experiment; Vortex; PIV; Two-phase air―water flow; Mark- och vattenteknik; Land and Water Resources Engineering; Civil and Architectural Engineering; Byggvetenskap;

   Sammanfattning : If air is entrained in a bottom outlet of a dam in an uncontrolled way, the resulting air pockets may cause problems such as blowback, blowout and loss of discharge capacity. In order to provide guidance for bottom outlet design and operation, this study examines how governing parameters affect air entrainment, air-pocket transport and de-aeration and the surrounding flow structure in pipe flows. LÄS MER

4. 3. Production and Products of Preschool Documentation : Entanglements of children, things, and templates

   Författare :Katarina Elfström Pettersson; Eva Reimers; Susanne Severinsson; Maria Simonsson; Mathias Martinsson; Annica Löfdahl Hultman; Linköpings universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Early childhood education; preschool practice; preschool documentation; systematic quality development work; agential realism; posthumanism; Förskola; förskolepraktik; dokumentation i förskolan; systematiskt kvalitetsarbete; agentisk realism; posthumanism;

   Sammanfattning : The objective of the present study is to produce knowledge about how children, things, documents, computers, teachers, templates and other entities take part in and produce documentation in preschool systematic quality development work. The thesis asks questions about how and what is produced as quality in preschool documentation. LÄS MER

5. 4. Exploring material things in family life : Morality and intimacy in sibling- and child-parent interaction

   Författare :Emilia Zotevska; Asta Čekaitė; Ann-Carita Evaldsson; Anna Martín Bylund; Susan Danby; Linköpings universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Family; Children; Materiality; Interaction; Everyday life; Familj; Barn; Materialitet; Interaktion; Vardagsliv;

   Sammanfattning : This study examines the everyday family life of 12 families across Sweden. The study aims to explore the ways in which material things figure in the enactment of everyday family life, that is, how family life is accomplished in interaction between children, parents and material things during everyday activities. LÄS MER

7. 5. Assembling the Smart Grid : On the Mobilization of Imaginaries, Users and Materialities in a Swedish Demonstration Project

   Författare :Anna Wallsten; Harald Rohracher; Jonas Anshelm; Vasilis Galis; Linköpings universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Smart grids; demonstration projects; translations; sociotechnical imaginaries; material participation; users; Smarta elnät; demonstrationsprojekt; översättning; sociotekniska föreställningar; material participation; användare;

   Sammanfattning : Influential actors refer to smart grids as a revamped version of the energy systemwhen they argue for alternative energy pathways, and assign demonstration projects with the task of turning prospects about the future into functional configurations. This thesis explores notions of the smart grid future that are implicitly conveyed in Swedish smart grid strategy and planning documents. LÄS MER