Simulations of ice accretion, runback and droplet re-emission in a multi-stage model of aeronautical engine

2016 ◽  
Author(s):  
Garazi Gomez de Segura Solay ◽  
Emmanuel Radenac ◽  
Rémi Chauvin ◽  
Claire Laurent
Keyword(s):  
Stage Model ◽  
Ice Accretion ◽  
Multi Stage

Deep Multi-stage Model for Automated Landmarking of Craniomaxillofacial CT Scans

2021 ◽  
Author(s):  
S. Palazzo ◽  
G. Bellitto ◽  
L. Prezzavento ◽  
F. Rundo ◽  
U. Bagci ◽  
...  
Keyword(s):  
Ct Scans ◽  
Stage Model ◽  
Multi Stage

Design and analysis of multi-stage model rocket for CADC

2021 ◽  
Author(s):  
Yongrui Jiang ◽  
Zhengxin Tao ◽  
Yifei Fan ◽  
Yilan Bai ◽  
Kaixuan Xu ◽  
...  
Keyword(s):  
Stage Model ◽  
Multi Stage

Multi-Stage Model Exercise Questionnaire

2006 ◽  
Author(s):  
Sonia Lippke ◽  
Jochen P. Ziegelmann
Keyword(s):  
Stage Model ◽  
Multi Stage

Lean in higher education

2019 ◽  
Vol 27 (1) ◽  
pp. 82-102 ◽  
Author(s):  
Yigit Kazancoglu ◽  
Yesim Deniz Ozkan-Ozen
Keyword(s):  
Higher Education ◽  
Decision Making ◽  
Business School ◽  
Stage Structure ◽  
Fuzzy Decision Making ◽  
Multi Criteria Decision Making ◽  
Stage Model ◽  
Content Type ◽  
Road Map ◽  
Multi Stage

PurposeThis research aims to investigate and define the eight wastes of lean philosophy in higher education institutions (HEIs) by proposing a multi-stage model.Design/methodology/approachThe authors have used a specific multi-criteria decision-making method, fuzzy decision-making trial and evaluation laboratory, to investigate the cause–effect relationships and importance order between criteria for wastes in HEIs. In total, 22 criteria were categorized under eight wastes of lean. The study was implemented in a business school with the participation of faculty members from different departments.FindingsThe results showed that the most important wastes in the business school selected were repeated tasks, unnecessary bureaucracy, errors because of misunderstanding/communication problems, excessive number of academic units and creation of an excessive amount of information. Another important result was that all the sub-wastes of talent were in the causes group, while motion and transportation wastes were in the effect group.Practical implicationsA road map to guide lean transformation for HEIs is proposed with a multi-stage model and potential areas for improvement in HEIs were presented.Originality/valueThis study proposes a multi-stage structure by applying multi-criteria decision-making to HEIs, focussing on wastes from a lean perspective.

scholarly journals Live Imaging of Heart Injury in Larval Zebrafish Reveals a Multi-Stage Model of Neutrophil and Macrophage Migration

2020 ◽  
Vol 8 ◽  
Author(s):  
Aryan Kaveh ◽  
Finnius A. Bruton ◽  
Charlotte Buckley ◽  
Magdalena E. M. Oremek ◽  
Carl S. Tucker ◽  
...  
Keyword(s):  
Live Imaging ◽  
Macrophage Migration ◽  
Stage Model ◽  
Larval Zebrafish ◽  
Multi Stage ◽  
Heart Injury

Unsteady Aerodynamics of Low-Pressure Steam Turbines Operating Under Low Volume Flow

2013 ◽  
Author(s):  
Benjamin Megerle ◽  
Timothy Stephen Rice ◽  
Ivan McBean ◽  
Peter Ott
Keyword(s):  
Unsteady Flow ◽  
Steam Turbine ◽  
Measurement Data ◽  
Unsteady Aerodynamics ◽  
Low Pressure ◽  
Rotating Stall ◽  
Stage Model ◽  
Steam Turbines ◽  
Multi Stage ◽  
Low Volume

Non-synchronous excitation under low volume operation is a major risk to the mechanical integrity of last stage moving blades (LSMBs) in low-pressure (LP) steam turbines. These vibrations are often induced by a rotating aerodynamic instability similar to rotating stall in compressors. Currently extensive validation of new blade designs is required to clarify whether they are subjected to the risk of not admissible blade vibration. Such tests are usually performed at the end of a blade development project. If resonance occurs a costly redesign is required, which may also lead to a reduction of performance. It is therefore of great interest to be able to predict correctly the unsteady flow phenomena and their effects. Detailed unsteady pressure measurements have been performed in a single stage model steam turbine operated with air under ventilation conditions. 3D CFD has been applied to simulate the unsteady flow in the air model turbine. It has been shown that the simulation reproduces well the characteristics of the phenomena observed in the tests. This methodology has been transferred to more realistic steam turbine multi stage environment. The numerical results have been validated with measurement data from a multi stage model LP steam turbine operated with steam. Measurement and numerical simulation show agreement with respect to the global flow field, the number of stall cells and the intensity of the rotating excitation mechanism. Furthermore, the air model turbine and model steam turbine numerical and measurement results are compared. It is demonstrated that the air model turbine is a suitable vehicle to investigate the unsteady effects found in a steam turbine.

A Multi-stage Model of Adenoma Development

2000 ◽  
Vol 207 (2) ◽  
pp. 129-143 ◽  
Author(s):  
PAUL F. PINSKY
Keyword(s):  
Stage Model ◽  
Multi Stage
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