The Civil Engineering (CE) exam syllabus. The Question and answers have been prepared Can you explain this answer? for Civil Engineering (CE) 2023 is part of Civil Engineering (CE) preparation. For dynamic similarity, the velocity of oil of kinematic viscosity of 0.03 stoke in a pipe of same diameter will bea)0.33 m/sb)0.66 m/sc)2 m/sd)6 m/sCorrect answer is option 'D'. Water having kinematic viscosity of 0.01 stoke flows at a velocity of 2 m/s in a pipe of 15 cm diameter. Hence, the velocity of oil in a pipe of the same diameter will be 6 m/s (option D). Therefore, we can set up the following equation:Ĭanceling out the common terms and rearranging the equation, we get: Similarly, let's calculate the Reynolds number for oil:Īs per the concept of dynamic similarity, the Reynolds number should be the same for both fluids in order to have similar flow characteristics. Now, let's calculate the Reynolds number for water: In this case, we can assume that the density of water and oil are approximately the same, so we can neglect the density term. μ is the dynamic viscosity of the fluid The concept of dynamic similarity is based on the Reynolds number (Re), which is a dimensionless quantity that determines the flow regime. We need to find the velocity of oil (V2) in a pipe of the same diameter, but with a different kinematic viscosity (ν2 = 0.03 stoke). Kinematic viscosity of water (ν1) = 0.01 stoke In this case, we are comparing the flow of water and oil in pipes of the same diameter. Dynamic similarity refers to the similarity in the flow characteristics between two different fluids or situations. To understand the given problem, we need to apply the concept of dynamic similarity.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |