342-0941/02 – Mechanics of Bulk Solids (MSP)
| Gurantor department | Institute of Transport | Credits | 10 |
| Subject guarantor | prof. Ing. Aleš Slíva, Ph.D. | Subject version guarantor | prof. Ing. Aleš Slíva, Ph.D. |
| Study level | postgraduate | Requirement | Choice-compulsory |
| Year | | Semester | winter + summer |
| | Study language | Czech |
| Year of introduction | 2013/2014 | Year of cancellation | |
| Intended for the faculties | FS | Intended for study types | Doctoral |
Subject aims expressed by acquired skills and competences
Students of the subject will be introduced to fundamental laws and described
parameters needed to a mathematic and physical description of a bulk solid
behavior.
Teaching methods
Individual consultations
Tutorials
Project work
Summary
Students of the subject will be introduced to fundamental laws and described
parameters needed to a mathematic and physical description of a bulk solid
behavior. Especially, a core of the subject will be turned to a storage system
proposal. Latest knowledge of the rapidly growing branch: nanotechnology will
be presented here also. There will be demonstrated measurement methods
following interpretation of measured values in the subject.
Ideal bulk solid; Definition of bulk solids state; Difference
between fundamental material states; Bulk solids logistics; Criteria of
transport/Processing system choice for Bulk solids.
Granulometry and Morphology, and methods and theory of their
assessment, including mathematical models, eg. Gauss, RRSB, Logarithmic
Distribution and so on.
Bulk solid Properties and Their Description; Flow influence;
Flow pattern size and their development; Jenike Shear Machine principle and
its equation; Rotary Shear Machine; Another shear machine construction;
Interpretation of measured values; Mechanical-Physical Property definition.
Particulate Material Constitution for the Bulk Solid
Application; Methods of angle of internal friction measurement and its
interpretation including energy concept; Partial physical magnitude influence
ratio to bulk solid mechanical-physical property.
Definition of Inter-Particle Bindings; Ratio of individual
physical and geometrical property influence to mechanical-physical properties
of Bulk solids, eg. moisture, shape, mechanical and electrical bindings,
Roscoe’s diagram and its design and principle, applications.
Models of Pressure State Distribution; Models of bulk solid
pressure development; General model of bulk solid pressure distribution; Usual
and state-of –the art of pressure modeling methods of Bulk solids; Method of
pressure distribution solution for Bulk solids according to Janssen’s, Rankin’s
and Pascal’s theories.
Motion of Bulk Solid Particulates in Assembly Constitution;
1st and 2nd of displacement mechanism; Ideal bulk solids and their deeper
relations; Piston flow mechanism and its definition and description including
edge conditions; Laminar flow mechanism and its definition and description
including edge conditions.
Speed Outlet Out of Vessel; Pressure peak and its model
creation incl. technical conclusions. Pulsating character of Bulk solid flow;
Own and wall frequency.
Flow Failures of Bulk Solids; Static and dynamic arc; Mass and
funnel flow; Jenike’s theory of mass; Ideal bulk solid application; Flow
through cone-shape outlet.
Application 1st: Bulk Solid Properties and Their Application
by Transport, Processing and storage designing; Bulk solid moulding /Balshin’s
Eq.
Application 2nd: Shapes and Machine Materials by Transport,
Processing and storage designing; Bulk solid moulding /Balshin’s Eq. Bulk
solid aeration. Pneumatic Transport.
Choice Method of Grinder and Mill Proposal; Grinding theory;
degradation and compression; Granulation.
Criteria of Conveyor Choice and Transport Systems for Bulk
Solids; Demands to transport and storage, and their quality parameters.
Innovation in the Bulk Solid Area; R&D trends in the area;
Nanotechnology; Present situation in the Czech Rep. in comparison with EU; R&D.
Compulsory literature:
Muther, R., Haganas, K.: Systematic Layout Planning, SNTL, Czech Rep., 1980.
Brown, R.: Principles of Powder Mechanics, Pergamon, UK, 1970.
Schulte, Ch.: Logistics, Victoria Publishing Praha, Czech Rep., 1994.
Recommended literature:
Brown, R.: Principles of Powder Mechanics, Pergamon, UK, 1970.
Way of continuous check of knowledge in the course of semester
Konzultace, semestrální projekt.
E-learning
Other requirements
Basic knowledge of mechanical and physical properties of bulk materials
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
Ideal bulk material. Definition of the stress state. The difference between the basic material conditions. Logistics of bulk materials. Transport and selection criteria transport and storage facilities.
Granularity and morgologie. Methods and theory of measurement, including
mathematical modeling eg. Gaussian distributions RRSB, logarithmic distributions like.
The properties of bulk materials and their description. Effect fluidity transport system.
Flow patterns and their descriptions. Jenikeho shear machine and its easurement principle.
Rotary shear machine. Other shear device. Interpretation of measured
values. Definition of mechanical and physical parameters.
The composition of particulate material and the particulate material application. Methods of measurement
angle of internal friction and its interpretation in the context of the energy concept.
Definition of interparticle bonds. The influence of various physical and
geometrical effects on tekutostní ratios, the influence of moisture, shape, and mechanical electrical links. Roscoevuv diagram, principle, construction.
Models stress state of powder. Models distribution voltage. Modelovíní
distribution voltage. Jansen, Rankine and Pascal's theory of stress in bulk
materials.
CATIC mass movement. The first and the second mechanism of particle motion. Piston flow mechanism and its definition, including boundary conditions. Laminar mechnaismus flow and its definition and description of the boundary conditions.
Leaving velocity from the storage containers. Pressure peaks and its modeling and compared with the actual state. Pulse character of the flow of bulk materials. Custom and wall frequency.
Fault ytoku bulk materials. Creation of static and dynamic arc. Weights and
core flow. Jenikeho theory of matter. Applications ideal loose material and its use. Flow through the conical discharge opening.
The properties of bulk materials and its applications in transport. Process and storage modes and design.
Shapes and materials handling and transport equipment. Balshinuv relationship
fluidization. Pneumatic conveying.
The selection of methods of grinding mills and suggestions. Theory crushing. Degradation and compression.
Granulation.
Selection criteria conveyor and transport system for bulk materials. Requirements transport and storage, and their quality requirements.
Innovation in bulk materials. The latest trends in R & D,
Nanotechnology, the current situation in the area of the Czech Republic, EU.
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction
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