scholarly journals Learning benefits by integrating design, manufacturing, and testing in a course for compressible flow visualizations

2019 ◽  
Vol 48 (4) ◽  
pp. 297-314
Author(s):  
Barbara S Linke ◽  
Lee Martin ◽  
Ian Garretson
Keyword(s):  
Shock Waves ◽  
Experimental Testing ◽  
Learning Experience ◽  
Sustainable Manufacturing ◽  
Aerospace Engineering ◽  
Gas Flows ◽  
Interdisciplinary Field ◽  
Flow Visualizations ◽  
Hydraulic Analogy ◽  
Design And Manufacture

Although engineering is by nature an applied and interdisciplinary field, courses in engineering can lead even the best students to develop knowledge that is disconnected from other related fields and from conditions of application. This paper describes an innovative undergraduate course that integrated the theory of shock waves, computational modeling, experimental testing, and science of sustainable manufacturing. The course supported better visualization of mechanical and aerospace engineering phenomena, such as shock waves in supersonic gas flows, by utilizing the hydraulic analogy of shallow water and a simple water table. Airfoil design and manufacture were integrated through aerospace and manufacturing theory and application. For the first course offering, student learning was assessed with regard to their views of engineering, learning experience, and transfer of learning. The course proved to increase self-efficacy as engineers, as well as their self-reported confidence in working comfortably on multi-disciplinary teams. Furthermore, scenario-based assessments confirmed that the students were able to integrate aerospace and manufacturing theory and application within new scenarios.

scholarly journals Near-source characteristics of two-phase gas–solid outbursts in roadways

2020 ◽  
Author(s):  
Aitao Zhou ◽  
Meng Zhang ◽  
Kai Wang ◽  
Derek Elsworth
Keyword(s):  
Shock Waves ◽  
Numerical Models ◽  
Gas Flows ◽  
Far Field ◽  
Two Phase ◽  
Emergency Rescue ◽  
Source Characteristics ◽  
Basic Parameters ◽  
Significant Attenuation ◽  
Coal And Gas Outbursts

Abstract Coal and gas outbursts compromise two-phase gas–solid mixtures as they propagate as shock waves and flows from their sources. Propagation is influenced by the form of the outburst, proximity to source, the structure and form of the transmitting roadways and the influence of obstacles. The following characterizes the propagation of coal and gas outbursts as two-phase gas–solid flows proximal to source where the coupled effects of pulverized coal and gas flows dominate behavior. The characteristics of shock wave propagation and attenuation were systematically examined for varied roadway geometries using experiments and numerical models. The results demonstrate that the geometry of roadway obstructions is significant and may result in partial compression and sometimes secondary overpressurization in blocked and small corner roadways leading to significant attenuation of outburst shock waves. The shock waves attenuate slowly in both straight and abruptly expanding roadways and more significantly in T-shaped roadways. The most significant attenuation appears in small angle corners and bifurcations in roadways with the largest attenuation occurring in blocked roadways. These results provide basic parameters for simplifying transport in complex roadway networks in the far-field, and guidance for the design of coal and gas outburst prevention facilities and emergency rescue.

scholarly journals TEACHING THE FUNDAMENTALS OF CIVIL ENGINEERING MATERIALS THROUGH EXPERIENTIAL LEARNING

2017 ◽  
Author(s):  
Joshua Woods ◽  
Natalie Mazur ◽  
John Gales
Keyword(s):  
Experiential Learning ◽  
Environmental Sustainability ◽  
Civil Engineering ◽  
Experimental Testing ◽  
Learning Experience ◽  
Reinforced Concrete Beam ◽  
Learning Activity ◽  
Hands On ◽  
Hands On Learning ◽  
Engineering Materials

This study presents an overview of a civil engineering materials course curriculum at Carleton University developed by the authors. The curriculum aims to move away from traditional civil engineering materials courses, which focus heavily on concepts related to material science, and instead concentrate on concepts that are more relevant to today’s practicing civil engineers. The rationale, application, and analysis of the integration of these concepts through an advanced application of case-based and experiential learning is discussed. Central to this new course curriculum is a hands-on experiential learning activity on the construction and experimental testing of reinforced concrete beam specimens in lab sections of approximately 25 students. The goal of the lab is to provide students with a hands-on learning experience and use this as a tool to cover advanced topics related to civil engineering; for example, environmental sustainability and resilience. The assessment of the students’ understanding of the concepts taught in class were performed through the use of an anonymous questionnaire distributed at the end of the course and through traditional examination and assignments. Results of the survey were compared between classes who engaged in the advanced experiential learning laboratory and those who did not. The results demonstrate that after introducing experiential learning into the course curriculum, students were more likely to form an educated opinion on the potential sustainability of a material. Experiential learning is shown to be a valuable tool for engineering education that, when used efficiently, can seamlessly incorporate newly emerging engineering concepts to ensure that graduating students are equipped with the knowledge and tools they require to be competitive in the job market. The relation of the course to contemporary accreditation of Graduate attributes is discussed at length along with critical information regarding the effectiveness of balancing student engagement in STEM subjects.

Conical gas flows with shock waves and turbulent boundary layer separation

2012 ◽  
Vol 47 (2) ◽  
pp. 263-280 ◽  
Author(s):  
M. A. Zubin ◽  
N. A. Ostapenko ◽  
A. A. Chulkov
Keyword(s):  
Boundary Layer ◽  
Shock Waves ◽  
Turbulent Boundary Layer ◽  
Boundary Layer Separation ◽  
Gas Flows ◽  
Layer Separation

Aircraft Detail Design Course at Embry-Riddle Aeronautical University

2014 ◽  
Author(s):  
Luis Gonzalez
Keyword(s):  
Numerical Analysis ◽  
Structural Analysis ◽  
Real World ◽  
Learning Experience ◽  
Aerospace Engineering ◽  
Capstone Course ◽  
Detail Design ◽  
Natural Context ◽  
Engineering Department ◽  
Innovative Learning

The capstone course in aircraft detail design at the Aerospace Engineering department of Embry-Riddle Aeronautical University will be presented. It is structured as a balanced mixture of lectures and a real-world project given by industry with some other activities carefully conceived to address specific deficiencies encountered in traditional engineering education; specifically, the dissociation in the students minds, or even practicing engineers, between abstract or numerical analysis and real-world design. In earlier semesters students tend to be exposed only to “clean” problems, where only one type of loading or deformation is considered or where certain aspects of the problem, such as attachments, are left out. Furthermore, in many cases these disciplines are taught in isolation, detached from their natural context. This results in students lacking a sense of feel and touch for structural analysis, something also observed for other engineering disciplines; capable of manipulating mathematical formulae but without understanding what the numbers they calculate really mean and therefore deprived of confidence about whether their design is sound or not. A special innovative learning experience at the beginning of the term has been implemented to deal with these problems, which consists, in essence, in a condensed version of the semester-long project.

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