Profile
Learning
English
Language Skills
Persian (Farsi)Native
Lesson Feedback
Lesson history
| Last month | Last 3 months | All time | |
|---|---|---|---|
| Completed lessons | 0 | 0 | 0 |
| Attendance rate | 100% | 100% | 100% |
Teacher reviews
No record
Activities
- Correct me. In present work, proposed design (variable thickness blade) has a higher efficiency than the original design (constant thickness blade) at the high flow coefficient (ϕ=0.275). By using such a Wells turbine, the cleaner air in the environment will be produced because the amount of fossil fuels consumption and air pollution is decreased more at the high flow coefficient in order to produce the electrical energy.April 21, 201700
- Correct me. Are use of "decreases" and "reduces" and "Reduction" in the following sentences correct grammatically and conceptually? Reduction of entropy generation downstream of flow means that the blade-to-blade interaction decreases and this reduces the amount of fossil fuels consumption and air pollution in order to produce the electrical energy.April 21, 201700
- a high-velocity flow of the blade’s pressure surface interaction According to the following figure, Is use of "a high-velocity flow of the blade’s pressure surface interaction" in the following sentences correct grammatically and conceptually? If it is not , kindly suggest ways to make it clearer. From Fig. 18(b) and (c), and Fig. 19(b) and (c), it can be seen that a high entropy generation region appears behind the TE portion of the blade because there is a high-velocity flow of the blade’s pressure surface interaction with backflow region and the low-velocity leakage vortex. TE=trailing edge My meaning of "a high-velocity flow of the blade’s pressure surface interaction with... " is "an interaction of high-velocity flow from the blade’s pressure surface with...".
December 31, 201600 - Correct me, Thnnks. Fig. 16 presents a comparison between viscous dissipation and turbulent dissipation at deep stall condition (ϕ=0.275) in the CTB. As shown in the fig. 16(a), viscous dissipation on the blade’s suction surface is higher than turbulent dissipation on that, while the maximum value of turbulent dissipation on the hub surface (effect horseshoe vortex) and the blade tip (effect of tip leakage flow) is higher than that of viscous dissipation on that. Further, the affected area of viscous dissipation on the hub surface is greater than that of turbulent dissipation on that. As is evident in Fig. 16(b), the turbulent dissipation around the blade’s suction surface (effect interaction between leakage vortex and fluid flow) is higher than viscous dissipation around that. The views of viscous dissipation in TE and the LE are magnified.
December 24, 201600 - Are the following sentences correct grammatically and conceptually? Hi, According to the following figure, Are the following sentences correct grammatically and conceptually? If it is not, kindly suggest ways to make it clearer. High entropy generation zone in the VTB (from the LE to the TE) is greater than that in the CTB because there is a stronger interaction between tip leakage vortex and fluid flow in the VTB due to the higher velocity of fluid particles around the VTB’s suction surface. CTB=constant thickness blade VTB=variable thickness blade TE=trailing edge of the blade LE=leading edge of the blade The following figure illustrate entropy generation contours at the near tip plane for the CTB and the VTB.
December 21, 201600 - Could you please suggest some words and verb to replace "placed" and "emphasis"? Could you please suggest some words and verb to replace "placed" and "emphasis"? Kock derived the entropy generation for Reynolds averaged equations and placed much emphasis in the entropy generation occurring in the fluctuating field.December 12, 201600
- use of "including" Hi, Is use of "including" in the following sentence correct grammatically and conceptually? If it is not , kindly suggest ways to make it clearer. This term, including(or containing) the mean velocity gradients, is often referred to as direct or viscous dissipation. explanation: The term is as follows:
December 6, 201620 - extends more of<...> Hi, According to the uploaded picture, Is use of "more of" in the following sentence correct grammatically and conceptually? If it is not , kindly suggest ways to make it clearer. The sentence is about the turbine. My meaning is : tip leakage vortex exceeds mid-span and goes under mid-span(between hub and mid-span). It affects fluid flow around of blade under mid-span! this influence is bad phenomena. "The tip leakage vortex in the CTB extends more of mid-span and mid-cord of the blade suction surface. " CTB=Constant thickness blade
December 3, 201600

00:00
00:00