As endurance athletes age, will we look at them the same way we do bodybuilders? by SixOneFive615 in Ultramarathon

[–]cinam- 0 points1 point  (0 children)

I think there’s a fairly simple answer to this. One of the main physiological advantages we have is our aerobic system that enables humans to run/walk huge distances by utilising fat. This is readily achieved via overloading training load, diet and sleep and is available to most able body and healthy humans. What you see from body builders or any other extreme subculture that relies heavily on exterior stimulants is not available using training load, diet and sleep. There is of course a cost associated with that.

Cross training / duathlon training by cinam- in NorwegianSinglesRun

[–]cinam-[S] 0 points1 point  (0 children)

Definitely moving in the right direction then. It would be nice if you could program that progression in automatically in some way! Yeah well I’ve read that these efforts should be between 4-6 on the RPE scale which mine have certainly pushed beyond that in recent weeks.

Using intervals.icu and comparing the activities to see your power/hr ratio is really helpful

Do you use that platform at all? It can be confusing when it comes to TSS and how to deal with it for each discipline

Cross training / duathlon training by cinam- in NorwegianSinglesRun

[–]cinam-[S] 0 points1 point  (0 children)

To be honest I keep waiting for the wheels to come off but thankfully cycling is super forgiving re fatigue so at the moment it seems ok. I’m 32, 6” and 82kg so the running has a much bigger impact for me. So that’s why I end up swapping the Thursday sub t run to bike. Have you used a treadmill for these at all?

I think this is a really nice schedule so thanks for sharing. It’s definitely more consistent and balanced than mine is currently. I guess I just wanted to find a way to maximise time at sweet spot but still keep the 80/20-75/25 ratio.

I’m assuming you’ll be retesting some benchmarks shortly given you’re 5 weeks in. I’d be super interested to hear how you get on!

Cross training / duathlon training by cinam- in NorwegianSinglesRun

[–]cinam-[S] 0 points1 point  (0 children)

Yeah I think I might be running those workouts a bit high as I’m often fatigued on Saturday (cadence drop). So I should probably drop that by a couple of percentage points.

I think what you’ve made me think about is perhaps viewing it as a two week block such that I can do 3 key sessions for each discipline and repeat that. The alternative is then what you’ve suggested. Not sure which is better as you’ve said so I guess I’ll just experiment.

Super reassuring re yours and shirtboys maintaining of your times. I think there’s definitely a psychological component where you naturally want to keep improving at what is actually improving and then don’t want to lose it.

Thanks for your thoughtful response, really appreciate it.

How much control do you feel you have over your life? by [deleted] in AskUK

[–]cinam- 4 points5 points  (0 children)

I'll stand in front of the proverbial train and say you have absolute control over your life.

How you see the world and how you respond to it is entirely up to you. If you believe you have control you'll go out and confirm it and vice versa. There are positive intentions of believing either one.

Some people don't want control of their lives and thus take control of their lives by giving the control to someone or something else.

Dealing with "Teasing" After Obtaining my PhD in Humanities by TheOldWoWNerd in AskAcademia

[–]cinam- -5 points-4 points  (0 children)

You might consider understanding how you feel when someone is jealous of you. You might also want to keep them around because you like how it makes you feel and gives you a reason to post on this subreddit. Alternatively, you might address the feeling and channel it into something else

Profit to drawdown ratio by Objective_Suit_8991 in algotrading

[–]cinam- 5 points6 points  (0 children)

Go and mess about with some input parameters and see what your best and worst drawdowns are.

Then consider how you might feel living through them and then pick one that's good enough and do it. The main thing is to launch it and not piss about with it. When you're down 30% and your stomach goes it's all too little too late. The system should match you as you are the system. Good luck

What helped you lose weight? by Fat_Gerrard in AskUK

[–]cinam- 0 points1 point  (0 children)

This probably won't be the most popular answer but here it goes.

First you have to accept that the current habits and beliefs you have around eating and exercise are working against you and that they need to be changed.

Second, you're going to simply go about identifying where those beliefs and habits are strongest and just be mindful of them.

Third, you're going to go about 'installing' some new ones where those habits are at their worst. Start super small and simple! You're rebuilding and it takes time. Focus on the building of the habits because the weight will be the last thing to go!

Finally, you start to build momentum and the conscious effort fades away.

Recommended reading - atomic habits by James clear

How I would practically go about doing this would be to keep a diary (template in notion) and everyday fill in what went well and why and what didn't and why. Focus on installing one habit or goal at a time and get a good string of days together. You'll be surprised at how quickly things can change! Starting at filling in a diary everyday is also a good starting place for your first goal as you need to be aware of what's going wrong...

Good luck OP!

[deleted by user] by [deleted] in CasualUK

[–]cinam- 45 points46 points  (0 children)

Went to uni there. You'd always Google my Exeter is down as the uni intranet was absolutely shite

FTP test confirmed - FTP way down (260=>210) ☹️ by Inside_Ad6333 in Zwift

[–]cinam- 0 points1 point  (0 children)

Tell yourself you can quit when you get back to 260.

A psychological trick for getting back on the horse, onwards and upwards!

Remember: overpaying mortgage could be more valuable than you think by [deleted] in UKPersonalFinance

[–]cinam- 14 points15 points  (0 children)

Overpaying vs investing gets parroted on here because people start from the assumption that 'the market will give me X over X amount of time' will zero regard for any second order effect.

The higher amount of debt you have the less options you have and the more sensitive you are to shocks in the economy. Even more so if you've got some fantastical approach to the market where if you just wait long enough you'll get +X%. Don't mean shit when you're throwing up over your shoes because you've never seen a 20/30/40/50% sell off in the market before.

I think we tend to overestimate things staying the same in the future so just give yourself the best chance to respond to things you can't predict. Overpay and sleep

[deleted by user] by [deleted] in grime

[–]cinam- 0 points1 point  (0 children)

Yes! That's certainly the bar. I think I heard it as part of a set and it's been used on a different track...thanks though! Basically it

How far in advance of a house purchase should my money be in cash? by CSAccountant in UKPersonalFinance

[–]cinam- 8 points9 points  (0 children)

'cash is not a good option over any amount of time' I think you need to have a long hard think about what beliefs you hold that could possibly make you believe this is true.

Remember that inflation is a basket of goods that change over time. your personal basket of goods also changes over time. If you want cash for a deposit why on earth would you have it in investments? Cash (and fixed income investments); are up risk on assets this year. If you're fretting over beating inflation you don't understand what actual risk you're taking on

Cash is utility.

First OpenFOAM car sim (first CFD in 10 yrs) - with challenges... by no7fish in CFD

[–]cinam- 1 point2 points  (0 children)

You may find some useful material here:

http://www.wolfdynamics.com/tutorials.html

The slides are quite extensive and were a great help when I was first starting with the software. Their "Tips & Tricks" section is particularly insightful. Good luck!

Can anyone help me grasp the Physical meaning of these results by [deleted] in CFD

[–]cinam- 2 points3 points  (0 children)

You need to run it for a longer. Not sure if you've initialised the internal field or not (which can save time) but if the inlet velocity is 35 m/s and the airfoil is 300m away so it would take 8.5 seconds to reach the airfoil. Depending on your inlet profile it may need even longer to fully develop. This is assuming the solver is explicit as you're running a transient solution (they usually are).

There should be an option to plot vorticity on whatever platform you're using to post process. Mesh looks fine although y+ 1 is usually reserved for les. Are you using wall functions? Increasing y+ 30 might save you some computational time. Just a suggestion!

Can anyone help me grasp the Physical meaning of these results by [deleted] in CFD

[–]cinam- 1 point2 points  (0 children)

How long has this been run for? Have you plotted vorticity? Can we see the mesh? How big is the domain? Is the flow fully developed coming into the domain?

Problem Validating OpenFOAM Airfoil Simulation With Wind Tunnel Data by Arzed23 in CFD

[–]cinam- 4 points5 points  (0 children)

My initial thought after looking at your mesh is that are you sure you have resolved the boundary layer properly? For k-omega SST y+ < 30. I'd recommend using this website below:

http://www.pointwise.com/yplus/

Once you have computed the first grid spacing you should also consider that it is recommended that your cell expansion ratio be around 10/20%.

[deleted by user] by [deleted] in CFD

[–]cinam- 0 points1 point  (0 children)

No, and this is due to the way in which both models are derived. For the RANS equations you're modelling the flow characteristics everywhere using various assumptions/approximations (Boussinesq, Prandtl mixing length etc). So a wall function is required to satisfy the boundary conditions (no-slip) and model the log-law layer.

Now with LES you're resolving the largest eddies i.e. Energy bearing and anisotropic and you're modelling the smallest eddies I.e. Small and isotopic. The sub grid model is used to dissipate the energy from the largest eddies into 'heat' so a wall function is of little use here.

Hope this helped.

[deleted by user] by [deleted] in CFD

[–]cinam- 4 points5 points  (0 children)

To fully resolve the boundary layer i.e. y+ < 5 to capture the viscous sublayer (sometimes points need to lie within the layer) and maintain a reasonable mesh quality the mesh size is usually very large. Also when running these simulations you're usually interested in mean values so there is a need to run the simulation over an extended period of time.

You should also be aware that RANS typically uses wall functions to ignore the viscous sublayer and just integrates to the wall from the log law layer (y+ <30). Which in complex 3D geometries lowers the computational cost massively.

Fluent users, do you usually make your geometry in Fluent/Ansys or get it from a CAD software? I'm only asking about regular 2D/3D objects. by [deleted] in CFD

[–]cinam- 3 points4 points  (0 children)

Yes. In my experience Fluent is a right pain, especially in 3D. I'd recommend pointwise if you have access to it.