Looking at the microworld with the naked eye Can the slow motion of something very tiny be similar to a quicker motion of something considerably larger?

Slides:

Advertisements

Similar presentations

CE 382, Hydraulic Systems Design (pipes, pumps and open channels) Principles of hydraulics 1.Conservation of energy 2.Continuity (conservation of mass)

Advertisements

Reynolds Number Insights in Biology What if you could shrink small enough to live in a drop of water?

Aero-Hydrodynamic Characteristics

Physical and Chemical Properties. What are properties? Matter has observable and measurable qualities. We can use general properties to identify substances.

Hot on the trail of the Very Viscous Liquid! Maria Ekiel – Jeżewska Maciej Lisicki.

PARTICLE THEORY What’s matter? EVERYTHING!!!. Big Idea: The particle theory of matter helps to explain the physical characteristics of matter. Demonstration.

The Art of Comparing Force Strengths… P M V Subbarao Professor Mechanical Engineering Department I I T Delhi Diagnosis of NS Equations.

Flow over immersed bodies. Boundary layer. Analysis of inviscid flow.

FORCES AND FLUIDS 8 TH GRADE PHYSICAL SCIENCE. FORCES AND FLUIDS UNIT VOCABULARY LIST FLUIDPRESSURE ATMOSPHERIC PRESSUREBUOYANT FORCE DRAG FORCESURFACE.

Chapter 9 Solids and Fluids (c).

Chapter 15: Human Movement in a Fluid Medium

Foundations of Physical Science Workshop: Viscosity of Fluids.

Falling Ball Belarus Reporter Gleb Penyazkov 1. The problem An electronic balance is connected to a PC in order to record the time dependence of the measured.

Properties of Fluids. Fluid: A substance that flows and takes the shape of its container. They also cannot form any shapes themselves. i.e: Water and.

What is it?. Fluid Mechanics  The study of fluids and the forces on them.  What are fluids?

Paul Drosinis UBC Phys 420. Introduction Short history on fluid dynamics Why bother studying fluid flow? Difference between Newtonian and Non-Newtonian.

The States of Matter. Solids, Liquids, and Gases  Your world is full of substances that can be classified as solids, liquids, or gases!  To define solids,

1) Why is a solid not considered a fluid?

Part One Physical Properties Properties of Matter.

Lesson 21 Laminar and Turbulent Flow

Flow Around Immersed Objects

Physical properties and kinetic theory

Chute-ing Among the Stars. What is a parachute? How does a parachute operate? Where have you seen a parachute deployed?

U N C L A S S I F I E D Conversion from Physical to Aerodynamic Diameters for Radioactive Aerosols Jeffrey J. Whicker Los Alamos National Laboratory Health.

Garden Watering 1 Garden Watering. Garden Watering 2 Question: Water pours weakly from an open hose but sprays hard when you cover most of the end with.

Fluid Resistance.

What are cells?. Today, You’re going to learn about cells.

Dynamic Similarity diabetes.com/Article s.asp?ID=150

1 Properties of Matter S. Staron Matter u Matter is anything that has mass and volume u Everything is made of matter.

Physical and Chemical Properties and Changes. Physical Properties Any characteristic of a material that you can observe easily without changing the substance.

Properties of Fluids 16-2.

4.2 Notes RESISTANCE IN FLUID SYSTEMS. Resistance in Fluid Systems Drag - the force opposing motion when a solid moves through a fluid Drag occurs only.

SALT WATER VS FRESH WATER

Solids Definite shape - a solid will remain in that shape Definite volume - it will not expand.

October 26th 2015 A Day Do Now PHYSICAL PROPERTY – First, take out your video notes. Then answer these questions, 1. What qualities or characteristics.

Unit 1 Physics on the go Topic 2 Materials: Viscosity.

Physical Properties. What are properties? Matter has observable and measurable qualities. We can use properties to identify substances. Two basic types.

 Forces of attraction between particles are strong when they are close together  Particles cannot flow in a solid b/c.

Hot Water, Cold Water What mixes faster?

DROPS IN LOW REYNOLDS NUMBER FLOW Maria L. Ekiel-Jeżewska Eligiusz Wajnryb Institute of Fundamental Technological Research Polish Academy of Sciences,

6 Life in a Fluid Medium. How is seawater different than Air?  More viscous  More dense (density increases linearly with salinity)  Lower levels of.

The Diversity of Life (Part 1) 1 Plants are part of the diversity of life.

Microflows in the Human Body

PLEASE TAKE OUT YOUR HOMEWORK. Friction - a force that opposes motion, or “pushes back” when two surfaces are touching. It’s always around and it affects.

Viscosità Equazioni di Navier Stokes. Viscous stresses are surface forces per unit area. (Similar to pressure) (Viscous stresses)

Anything that has mass and takes up space!  Mass  Weight  Volume  Density.

INSECTS AND HYDRODYNAMICS:

Reynolds Number (Re) Viscosity: resistance of a liquid to change of form. Inertia: resistance of an object (body) to a change in its state of motion.

WARM UP Identify the intermolecular forces present in each of the following mixtures: PCl3 and CCl4 H2O and H2O NaCl and H2 CO2 and N2 HF and HCOOH Ca3(PO4)2.

Newtonian Mechanics II: Drag Force Centripetal Force

3.1 Viscosity and the Effects of Temperature

Basic Aeronautics and Aerodynamics

Chapter 12 Properties of Matter

Part One Physical Properties Properties of Matter.

Bell work – What do you think a physical property is??

Chapter 3: Section 2 Fluids.

Hydraulic & Pneumatic Systems

REAL FLUIDS SECTION 4.

States of Matter What is Matter?

Physical Properties Properties of Matter.

Unit 4 Lesson 1 What Are Solids, Liquids, and Gases?

Similarities and Differences

Matter- Anything that has mass and volume

Biomechanical Principles - Fluid Mechanics

States of Matter What is Matter?

Properties of Fluids: Buoyancy, Pressure & Viscosity

States of Matter and describing them

Unit 4 Lesson 1 What Are Solids, Liquids, and Gases?

Physical and Chemical Properties

Chapter ? SPI 0807.Inq.2-4 SPI SPI

Presentation transcript:

Looking at the microworld with the naked eye Can the slow motion of something very tiny be similar to a quicker motion of something considerably larger? Maciej Lisicki Maria Ekiel - Jeżewska

What does it mean 'similar'? Identical shape is not enough

L ρ, μ U Reynolds number Density and viscosity of the liquid Flow velocity Characteristic size

Flow similarity principle Two flows having the same Reynolds numbers have the same character. Low viscosity, little size, low velocities = High viscosity, big size, high velocity

Low viscosity + little objects Welcome to the microworld! Rhodobacter E. coli Howard Berg’s Laboratory BACTERIA IN WATER

High viscosity + large objects MACROWORLD MICROWORLD Re

Flows with similar Reynolds numbers are similar! Instead of looking at swimming microobjects, we can observe large bodies but in a Very Viscous Liquid!