Search Results - "Niemi, Timo"

Particle size distribution in CPFD modeling of gas-solid flows in a CFB riser by Wang, Qinggong, Niemi, Timo, Peltola, Juho, Kallio, Sirpa, Yang, Hairui, Lu, Junfu, Wei, Lubin

“…A computational particle fluid dynamics （CPFD） numerical method to model gas-solid flows in a circulating fluidized bed （CFB） riser was used to assess the…”
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Effect of software implementation on the result of computational fluid dynamics simulation of circulating fluidized bed risers by Nikku, Markku, Niemi, Timo, Kallio, Sirpa, Daikeler, Alexander

“…While in scientific literature much focus is directed toward model validation, comparison, and even parametric investigations on individual model parameters,…”
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Modeling of conversion of a single fuel particle in a CFD model for CFB combustion by Niemi, Timo, Kallio, Sirpa

“…In CFD simulation of CFB combustion, computation of the local instantaneous conversion rate of a single fuel particle should be fast. Since fuel conversion is…”
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An open‐source population balance modeling framework for the simulation of polydisperse multiphase flows by Lehnigk, Ronald, Bainbridge, William, Liao, Yixiang, Lucas, Dirk, Niemi, Timo, Peltola, Juho, Schlegel, Fabian

“…Polydispersity is a challenging feature of many industrial and environmental multiphase flows, influencing all related transfer and transport processes…”
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Body-mind dissociation in psychoanalysis. Development after Bion by Niemi, Timo

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Analysis of the time-averaged gas–solid drag force based on data from transient 3D CFD simulations of fluidized beds by Kallio, Sirpa, Peltola, Juho, Niemi, Timo

“…In the present work, a qualitative analysis of the time-averaged gas–solid drag force in gas–solid fluidized beds is carried out. The analysis is based on a…”
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Modeling of the time-averaged gas–solid drag force in a fluidized bed based on results from transient 2D Eulerian–Eulerian simulations by Kallio, Sirpa, Peltola, Juho, Niemi, Timo

“…In the present paper, the possibilities to cover all fluidization states by a single drag law in steady-state CFD multiphase flow modeling are evaluated. The…”
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Parametric study of the time-averaged gas–solid drag force in circulating fluidized bed conditions by Kallio, Sirpa, Peltola, Juho, Niemi, Timo

“…Steady state modeling based on time-averaged transport equations is a computationally efficient method for CFD simulation of large industrial-scale circulating…”
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A visual XML dataspace approach for satisfying ad hoc information needs by Moilanen, Katja, Niemi, Timo, Näppilä, Turkka, Kuru, Mikko

“…Dataspace systems constitute a recent data management approach that supports better cooperation among autonomous and heterogeneous data sources with which the…”
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Concept-based query language approach to enterprise information systems by Niemi, Timo, Junkkari, Marko, Järvelin, Kalervo

“…In enterprise information systems (EISs) it is necessary to model, integrate and compute very diverse data. In advanced EISs the stored data often are based…”
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An approach for developing a schemaless XML dataspace profiling system by Näppilä, Turkka, Niemi, Timo

“…Dataspace systems have been proposed recently as an alternative to the traditional data integration approach. They offer reduced setup time and costs by…”
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Run or die: bi-logical phenomena at the body-mind border by Niemi, Timo, Lombardi, Riccardo

“…In clinical psychoanalytic work, one often encounters psychical material that is devoid of form or shape. This kind of material is often manifest as concrete…”
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Hajautettujen faktatietokantojen käytön yksinkertaistuminen by Kalervo Järvelin, Timo Niemi

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A query language for selecting, harmonizing, and aggregating heterogeneous XML data by Näppilä, Turkka, Moilanen, Katja, Niemi, Timo

“…Purpose The purpose of this paper is to introduce an expressive query language, called relational XML query language (RXQL), capable of dealing with…”
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Derived types in semantic association discovery by Jämsen, Janne, Niemi, Timo, Järvelin, Kalervo

“…Semantic associations are direct or indirect linkages between two entities that are construed from existing associations among entities. In this paper we…”
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A relational data harmonization approach to XML by Niemi, Timo, Näppilä, Turkka, Järvelin, Kalervo

“…There are numerous approaches for integrating data from heterogeneous data sources. A common background assumption is that the data sources remain quite stable…”
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Advanced query language for manipulating complex entities by Niemi, Timo, Junkkari, Marko, Järvelin, Kalervo, Viita, Samu

“…Complex entities are one of the most popular ways to model relationships among data. Especially complex entities, known as physical assemblies, are popular in…”
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Processing strategy for the NF super(2) relational frc-interface by Niemi, Timo, Jarvelin, Kalervo

“…The idea of the frc- (form-relations-conditions) interface is to reduce the user effort in the NF super(2) (Non-First-Normal-Form) relational query formulation…”
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The processing strategy for the NF 2 relational frc-interface by Niemi, Timo, Järvelin, Kalervo

“…The idea of the frc- (form-relations-conditions) interface is to reduce the user effort in the NF 2 (Non-First-Normal-Form) relational query formulation…”
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ExpansionTool: Concept-based query expansion and construction: Conceptual, Linguistic and Task-Based IR: Research at the University of Tampere by JÄRVELIN, Kalervo, KEKÄLÄINEN, Jaana, NIEMI, Timo

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