HYDRAULIC SYSTEMS DESIGN RESEARCH GROUP DEPARTMENT OF SCIENCES AND METHODS FOR ENGINEERING UNIVERSITY OF MODENA AND REGGIO EMILIA
AN INNOVATIVE THEORY FOR THE STUDY OF NON-IDEAL FLUIDS FOR FLUID POWER APPLICATIONS NON IDEAL FLUIDS THEORETICAL APPROACH VISCOSITY ELASTICITY FLUID MODEL FLUID MEMORY FLUID RELAXATION YOGURT STRESS: NUMERICAL VS. EXPERIMENTAL COMPARISON NUMERICAL RESULTS APPLICATION FIELDS CERAMIC APPLICATION: FOOD INDUSTRY ALIMENTARY HYDRAULIC ELASTOMERIC AND POLYMERIC
FLUID-DYNAMICS ANALYSIS OF A TRANSMISSION SYSTEM FOR MEDIUM SIZED POWER TRACTORS NUMERICAL MODEL OF THE TRANSMISSION SYSTEM PS3 55/30 PS1 46/39 PS2 37/26 Lubrication layout Reverse 46/39 LMS Imagine.Lab AMESim rev9.1 A CLUTCHES CONTROL VALVE PTO BRAKE CONTROL VALVE A P T P T
MODELING AND TESTING DUAL CLUTCH TRANSMISSIONS FOR Dual Clutch Clutch Plates Spring Actuator Even Gears Shaft Odd Gears Shaft HIGH PERFORMANCE VEHICLES Drain P Drain P A T A F F spring solenoid Solenoid Valve F pressure Experimental Testing T Clutch K1 Odd Gears Clutch K2 Even Gears Clutch Control Plate (CCP) Syncro Actuation Plate (SAP)
VOLUMETRIC ORBIT PUMP CAE ANALYSIS AND PERFORMANCE IMPROVEMENT 11 CHAMBERS 10 CHAMBERS INFLUENCE OF THE CHAMBER FLOW AREAS
DEPT. OF ENGINEERING SCIENCES & METHODS UNIV. OF MODENA & REGGIO EMILIA MODELING THE AXIAL BALANCING MECHANISM OF ORBIT ANNULAR HYDRAULIC MACHINES EQUIVALENT MASS EQUIVA LENT SPRING EQUIVAL NUMERICAL VS. EXPERIMENTAL COMPARISON ENT INERTIA β=0deg β=-10deg β=-20deg β=-40deg β=-50deg DRA IN CLEARANCES OPERATING MAP Θ=0deg β=-30deg
SPLASH LUBRICATION: VOF approach + CHIMERA mesh Gear box lubrication and cooling:
VM Motori S.p.A. Cento, Ferrara (Italy) DEPT. OF ENGINEERING SCIENCES & METHODS UNIV. OF MODENA & REGGIO EMILIA A LUMPED PARAMETER APPROACH FOR THE SIMULATION OF ICE COOLING SYSTEMS ICE Pressurized liquid cooling circuits Cooling circuit numerical model Cooling circuit test rig assembly Piezo-resistive pressure gauges Magnetic flow meters Flow rates distribution Flow rate values are expressed in l/min
STUDY OF ELECTRO-PNEUMATIC COMPONENTS Pressure Distribution FOR CNG INJECTION SYSTEMS Filling Nozzle Up to 250 [bar] Tank Valve Velocity Field CFD results Velocity Field m CNG 1.0[ g / s] 2 7 [bar] CFD results Discharge Coefficient Injection System Pressure Control Device Thermographic Analysis
MULTI-COMPONENT FLOW: VOF approach Multi-fuel injection systems: Low pressure fuel accumulator Fuel switch over from E21 to E100 courtesy of Tetra-Fuel injection system
FLOW FORCES EFFECTS: Moving grid (GGI approach) Hydraulic valve spool motion: C d A Q in 2 p OUTLET INLET Moving Mesh 0.01 mm
DEPT. OF ENGINEERING SCIENCES & METHODS UNIV. OF MODENA & REGGIO EMILIA OPTIMIZATION OF PACKAGING MACHINES FOR LIQUID FOOD Air Sterile System Filling System Lumped parameters analysis Super heater detailed model O U T L E T HOT_INL ET COLD_INLET A-Valve Flow meter AMESim v.9 SL1 by Regulating Valve Change Over Valve Float with pressure flange Packaging material tube Δp = 0.1 bar T = 293 K Arif = 132.86 mm2 CFD analysis 80 deg 90 deg 100 deg 110 deg 120 deg 130 deg 140 deg 150 deg 160 deg Experimental Analysis Jaw System Actuation Unit: Jaw System Left hooks Test rig cooling system Left arm Supply and Control Units Paper cutters Right arm Right hooks Cooling valve control system
NON-NEWTONIAN FLUIDS: Herschel Bulkley approach Ceramic spray pump:
SPRAY FORMATION: Eulerian approach Liquid aluminum injection: ALUMINUM = ENERGY CARRIER STEAM GENERATOR H 2 O (g) H 2 (g) + H 2 O (g) H 2 SEPARATION SYSTEM H 2 HEAT 2Al + 3H 2 O Al 2 O 3 + 3H 2
SOLID PHASE TRANSPORT: DEM approach Coffee Roasting: Preheating drum Plenum at the roasting drum outlet ṁ in,coffee = 250Nm 3 /h ṁ in,coffee = 350Nm 3 /h ṁ in,coffee = 500Nm 3 /h